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NCERT Solutions for Class 10 Science Chapter 9 Heredity and Evolution

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NCERT Solutions for Class 10 Science Chapter 9 Heredity and Evolution

Edited By Irshad Anwar | Updated on Oct 08, 2023 11:10 AM IST | #CBSE Class 10th

NCERT Solutions for Class 10 Science Chapter 9 Heredity and Evolution

NCERT Solutions For Class 10 Science Chapter 9 Heredity and Evolution: - As per the CBSE Syllabus 2023–24, this chapter has been renumbered as Chapter 8 in the latest NCERT Textbook. The top academics in India created these heredity and evolution class 10 exercise answers to help students succeed in the subject Science. In this article, We are providing you with detailed NCERT Solutions For Class 10 Science Chapter 9 Heredity and Evolution. We have filled the Heredity and Evolution Class 10 Solutions with beautiful diagrams and images that are necessary to explain the concepts. We have introduced a new Solutions PDF in the article for better experience.

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Make your foundation strong with NCERT solutions for Class 10 Science Chapter 9 for competitive exams like NEET. As many questions from this chapter will also appear in the CBSE Board exams, Chapter 9 of NCERT Solutions is very important and significant. Referring to the Biology NCERT solutions for Heredity and Evolution Class 10 Science Chapter 9, we will know that there are several things that we genetically get from our parents. Such as the colour of eyes, curly hair, etc. This is termed as heredity. NCERT Class 10 Science Solutions Chapter 9 will help the students clear all their doubts and check their answers after solving the questions.It is advisable to go through NCERT Solutions for Class 10 to score good marks in the exams. In addition to this, they must complete the NCERT Class 10 Science syllabus at the earliest possible time to revise in a better way. Read further to know the NCERT Solutions for Class 10 Science Chapter 9 and other details.

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Download the NCERT Solutions for Class 10 Science Chapter 9 Heredity and Evolution PDF for free. This chapter has been renumbered as Chapter 8 in accordance with the CBSE Syllabus 2023–24.

NCERT Solutions for Class 10 Science Chapter 9 Heredity and Evolution - PDF

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Heredity and Evolution Class 10 NCERT Solutions (Intext Questions)

Topic 9.1, Page Number 143

Q. 1. If a trait A exists in 10% of a population of an asexually reproducing species and a trait B exists in 60% of the same population, which trait is likely to have arisen earlier?

Answer:

Trait B is more likely to have arisen earlier because it has a higher percentage of the population and in asexual reproduction, traits are carried over to the next generation with minimal changes in the traits.

For example, all the sugarcanes in the field which reproduce asexually, have almost similar characteristics, however, the animals and human which reproduce sexually, have more chances of traits in the next generation.

Q. 2. How does the creation of variations in a species promote survival?

Answer:

Variation in our characteristics occurs due to sexual reproduction and inaccurate copying of DNA. The varied characteristics which fit for surviving passes on to the next generation more easily and the characteristics which are not favourable for surviving will get vanish after some generation.

Favourable variations help a species to adapt to changes in their environment and they promote survival of a species.

Class 10 Heredity and Evolution Solutions: Topic 9.2 Solutions, Page Number 147

Q. 1. How do Mendel’s experiments show that traits may be dominant or recessive?

Answer:

Mendal Conducted many experiments by crossing the Tall plants and Short plants. he found that the trait Tall which appears in the first generation also appeared in the second generation with 75 % in number. and the trait short appeared in the second generation by 25% in number. Hence he concluded that trait Tall is Dominant and the trait short is recessive.

in other words:

Tall + Tall = Tall

Tall + Short = Tall

Short + Tall = Tall

Short + Short = Short

As we can see there are 3 out of 4 Tall in the Next Generation. Hence it is a dominant trait.

Hence by this experiment, he showed that traits can be Dominant or Recessive.

Q. 2. How do Mendel’s experiments show that traits are inherited independently?

Answer:

In Mandel's one of the experiments he crossed the Pure breeding Tall plants having round seed with Short plants having wrinkled seed. here he found some of the new traits like Tall plant having wrinkled seed and Short plants having round seed.

Tall and Round + Short and Wrinkled = Tall and Round + Tall and Wrinkled +Short and Wrinkled + Short and Round

( Previous Trait) (New Trait) (Previous Trait ) (New Trait)

Those new traits would not have been there if traits are inherently dependent.

And hence he concluded that traits are inherited independently

Q. 3. A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant? Why or why not?

Answer:

No, This information is not sufficient to conclude any trait dominant or recessive. this is because we don't know the blood group of all offsprings.

The given blood group A can be AA or AO, so we can't really draw any conclusion from it.

Q. 4. How is the sex of the child determined in human beings?

Answer:

Half the male gametes have X-chromosomes and the other half have Y-chromosomesThe human male has one X-chromosome and one Y-chromosome. In other words, The human male has one X-chromosome and one Y-chromosome On the other hand, all-female gametes have only X-chromosomes. If a sperm carrying Y-chromosome fertilizes an ovum then the child born will be a boy.

On the other hand, if a sperm carrying X-chromosomes fertilizes an ovum then the child born will be a girl.

X + X = Girl

X + Y = Boy.

Heredity and Evolution Class 10 Questions and Answers: topic 9.3, Page Number 150

Q. 1. What are the different ways in which individuals with a particular trait may increase in a population?

Answer:

The different ways in which individuals with a particular trait may increase in a population are

1) Natural Selection: if a trait is useful to the population, it will increase naturally.

2) Genetic Drift: if a population faces any accidents such that the majority of the population get killed, then the remaining ones can pass their genes to the next generation and increase the population of their traits.

3) Sexual Selection: some traits also increases in choosing a suitable partner for mating. if there is mating between male and female, their offspring will contain their traits and the population with that trait increases. So, sexual selection of partner plays a much more important role than we realize. for example, most of the creativity traits like music and art skills are the result of sexual selection.

Q. 2. Why are traits acquired during the life-time of an individual not inherited?

Answer:

The traits acquired during the lifetime of an individual are not inherited because acquired traits involve a change in non-reproductive tissues and do not affect the genetic makeup like DNA.

Hence they can not be transferred sexually to the next generation.

Q. 3. Why are the small numbers of surviving tigers a cause of worry from the point of view of genetics ?

Answer:

1) The small number member in a population does not produce a large variation in the genes which are essential for the survival of the species.it means Small numbers of tigers mean that fewer possible variations of genes are available.

2) If any natural calamity occurs or any disease spreads and kills these small numbers of surviving tigers, they will become extinct resulting in the loss of these genes forever.

3) Less number of species means less number of diversity and a lesser number of traits which reduces the chances of adaptability with respect to change in the environment.

Class 10 Science Chapter 9 Question Answer: Topic 9.4, Page Number 151

Q. 1. What factors could lead to the rise of a new species?

Answer:

The factors could lead to the rise of a new species are :

1) Natural Selection

2) Method of Genetic Drift

3) Gene Variation on Mutation

4)Geographical and environmental factors

Q. 2. Will geographical isolation be a major factor in the speciation of a self-pollinating plant species? Why or why not?

Answer:

No. Geographical isolation prevents the transfer of pollen among different plants. whereas, if the plant is self-pollinating which means they pollen are transferred from the same plant, The Geographical isolation cannot prevent speciation in this case.

However, there is some possibility of some environmental change which could result in some variation.

Q. 3. Will geographical isolation be a major factor in the speciation of an organism that reproduces asexually? Why or why not?

Answer:

No. Geographical isolation prevents gene flow between populations of a species that reproduces sexually. whereas asexual reproduction generally involves only one individual. In an asexually reproducing organism, variations can occur only when the copying of DNA is not accurate.

Therefore, geographical isolation cannot prevent the formation of new species in an asexually reproducing organism.

Heredity and Evolution Class 10: Topic 9.5 Solutions, Page Number 156

Q. 1. Give an example of characteristics being used to determine how close two species are in evolutionary terms.

Answer:

The similar kind of organs is one such evidence that is used to determine how close two species are related. The presence of feathers in dinosaurs and birds indicates that they are evolutionarily related. Dinosaurs had feathers, not for flying but instead, these feathers provided insulation to these warm-blooded animals. However, the feathers in birds are used for flight.

This proves that reptiles and birds are closely related and that the evolution of wings started in reptiles,

Also if we consider the example of Human and Ape, the body style of both is similar and hence they are closely related in evolutionary terms.

Q. 2. Can the wing of a butterfly and the wing of a bat be considered homologous organs? Why or why not?

Answer:

Homologous organs have different look and perform a completely different function, however, shares a common basic structure. wing of a butterfly and the wing of a bat performs a similar function but have a different basic structure. wings of a butterfly are membrane supported by muscles and wings of a bat is the body skeleton.

Hence they are not the homologous organ rather analogous organ because they perform the same function.

Q. 3. What are fossils? What do they tell us about the process of evolution?

Answer:

Fossils are dead remains (may be a part of the organism or the whole organism) of plants, animals or any other organisms that existed on earth in the past

Fossils help us in many ways like,

(i) They give great insight into the evaluation. for example, the pattern of fossil distribution gives us an idea of the time in history when various species were formed and extinct.

(ii) They help us in establishing evolutionary relations between present organisms. Example: Archaeopteryx (connecting link between reptiles and birds).

Heredity and Evolution Class 10 Questions and Answers: Topic 9.6 Solutions, Page Number: 158

Q. 1. Why are human beings who look so different from each other in terms of size, colour and looks said to belong to the same species?

Answer:

Human beings who look so different from each other in terms of size, color and looks said to belong to the same species because their genetic makeup is similar and have the same organization at the genetic level. We all have the same number of chromosome and we breed among ourselves to produce fertile offspring.

Q. 2. In evolutionary terms, can we say which among bacteria, spiders, fish and chimpanzees have a ‘better’ body design? Why or why not?

Answer:

Evaluation should not be equated with progress or any kind of better quality like better body design. Evaluation simply creates a more complex body design. And this does not mean that simple body design is inefficient. for example, a bacteria has a very simple body but still is the most cosmopolitan organism found on the earth. They can survive deep sea, hot spring, and even icy-cold freezing environment.

So, we can't really say there's a better body design as these organisms evolved in the different-different environment and made changes in their body structure according to "Their " need.

Heredity and Evolution Class 10 Exercise Answers

Q. 1. A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short. This suggests that the genetic make-up of the tall parent can be depicted as

(a) TTWW
(b) TTww
(c) TtWW
(d) TtWw

Answer:

As half the progenies are short, this implies that the parent plant also will have a collection of short genes. Also since all progenies bore violet flowers, the violet color is dominant over white.

Hence TtWW might be the correct answer.

Q. 2. An example of homologous organs is

(a) our arm and a dog’s fore-leg.
(b) our teeth and an elephant’s tusks.
(c) potato and runners of grass.
(d) all of the above.

Answer:

Homologous organs have the same origin but different function. all the given option have the same origin and hence correct option is d.

Q. 3. In evolutionary terms, we have more in common with

(a) a Chinese school-boy.
(b) a chimpanzee.
(c) a spider.
(d) a bacterium.

Answer:

We are human beings like a Chinese boy. Thus, option (a) is correct.

Both human and Chinese boy are of the same ancestry and belongs to Homo Sapiens .

Q. 4. A study found that children with light-coloured eyes are likely to have parents with light-coloured eyes. On this basis, can we say anything about whether the light eye colour trait is dominant or recessive? Why or why not?

Answer:

For considering a trait as dominant or recessive, we need the information of a minimum of 3 generations.

If the grandparent, parent and the children. all have the light colored eye, then we can conclude that light eye color is a dominent trait.

Class 10 Science Ch 9 Question Answer:

Q. 5. How are the areas of study – evolution and classification – interlinked?

Answer:

Classification involves grouping of organisms into a formal system based on similarities and differences. Two species are more closely related if they have more characteristics in common and if two species are closely related then it means they have a more recent common ancestor.

We classify organisms according to their characteristics which is similar to the things we analyze in evaluation. Hence both areas of study are interlinked.

Q. 6. Explain the terms analogous and homologous organs with examples.

Answer:

Analogous organs: Those organs which have different basic structure but have a similar appearance and perform similar functions are called analogous organs. Example - wings of bird and insect.

Homologous organs: Those organs which have the same basic structure but different functions are called homologous organs. Example: forelimb of humans and forelimb of lizard.

Q. 7. Outline a project which aims to find the dominant coat colour in dogs.

Answer:

(i) Select two varieties of dogs one with white coat color, the other with black coat color.

(ii) Crossbreed them taking a male dog from one variety and bitch (female dog) from the other variety.

(iii) Observe the color of offsprings of the F1 generation.

(iv) Now, bring about breeding among the organisms of the F1 generation.

(v) Observe the coat color of organisms (pups) of F2 generation and note the variations in coat color.

(vi) Draw conclusions on the basis of your study.

One of the probable inheritance patterns may be as given below.

Phenotypic ratio = 3 : 1,

Black coat colour (3) : White coat colour (1)

Q. 8. Explain the importance of fossils in deciding evolutionary relationships.

Answer:

Fossils provide us evidence about many things like:

1) The organisms that lived long ago in the past.

2) Connecting links between two groups. for example, the feather in some dinosaurs means that birds are very closely related to reptiles.

3)The development of any particular species by evaluation.

4) The time period of the organisms.

5) Simple to complex body design journey.

Q. 9. What evidence do we have for the origin of life from inanimate matter?

Answer:

The evidence for the origin of life from inanimate matter was provided through an experiment, conducted in 1953, by Stanley L. Miller and Harold C. Urey.

In the experiment, they assembled an atmosphere containing molecules like ammonia, methane and hydrogen sulfide, but no oxygen, over water. This was similar to the atmosphere that thought to exist on the early earth. This was maintained at a temperature just below 100°C and sparks were passed through the mixture of gases to simulate lightning.

At the end of a week, 15% of the carbon from methane, had been converted to simple compounds of carbon including amino acids which make up protein molecules and support the life in the basic form.

Thus, this experiment suggests that life on earth arose fresh.

Q. 10. Explain how sexual reproduction gives rise to more viable variations than asexual reproduction. How does this affect the evolution of those organisms that reproduce sexually?

Answer:

Sexual reproduction causes more viable variations due to the following reasons:

1)Error in the copying of DNA, which are not highly significant.

2) Random segregation of paternal and maternal chromosome at the time of gamete formation.

3)Exchange of genetic material between homologous chromosomes during the formation of gametes.

4) Accumulation of variations occurred due to sexual reproduction over generation after generation and selection by nature created wide diversity.

In the case of asexual reproduction, only the very small changes due to inaccuracies in DNA copying pass on the progeny. Thus, offsprings of asexual reproduction are more or less genetically similar to their parents. So, it can be concluded that evolution in sexually reproducing organisms proceeds at a faster pace than in asexually reproducing organisms.

Q. 11. How is the equal genetic contribution of male and female parents ensured in the progeny?

Answer:

The inheritance of equal parent chromosomes ensures equal genetic contribution within the relative of male and female folk. There are 23 pairs of chromosomes. There is no pairing of all human chromosomes. The primary twenty-two trials are called autosomes out of those twenty-three pairs, and the remaining one pair is also thought to be sex chromosomes drawn as X and Y. Females have an ideal trial of 2 X sex chromosomes and males have an inappropriate trial of I X and I Y chromosome.
During the replication process, the male germ cell (haploid) fuses with the feminine gamete (haploid) resulting in the formation of the diploid fertilized ovum as the fertilization method takes place. Within the relative, the fertilized ovum receives the associated degree of equal contribution from the oldsters of genetic material. Of the comparatively twenty-three pairs of chromosomes, the parent contributes twenty-two autosomes and one X or sex chromosome, whereas the feminine parent contributes twenty-two autosomes and one chromosome.

Q. 12. Only variations that confer an advantage to an individual organism will survive in a population. Do you agree with this statement? Why or why not?

Answer:

It is not always true. The variations that confer an advantage to an individual organism are definitely of more survival value because natural selection prefers these variations. But there are several other variations which, though do not provide an advantage to the organism in if present condition, survive and are inherited to the next generations. Such non-advantageous variations may become advantageous in future when the environmental conditions change.

For example, at this stage of evolution, The art, and music skills that we acquire doesn't give us any survival benefit but still called a good quality trait or variation.

NCERT Solutions for Class 10 Science Chapter 9 Heredity and Evolution

Heredity and Evolution: Students can compare their answers to the model responses by using the in-depth Solutions to the NCERT textbook questions. The exercises and in-text questions in the NCERT textbooks are briefly explained in the Chapter-wise NCERT Solutions for Class 10 Science. Heredity and Evolution Class 10 Solutions is covered in detail in the following paragraphs. Heredity and evolution class 10 exercise answers are given in step-wise format using bullet points. In heredity and evolution class 10 solutions you will also find intext questions with detailed solutions.

NCERT Solutions for Class 10 Science: Important Formulas and Diagrams + eBook link

When it comes to science, putting all of the most important equations, diagrams, and points in one place enables a quick glance and an instant reminder, which can cut down on the amount of time needed for revision once the concepts are understood. Heredity and Evolution Class 10 NCERT Solutions is a very crucial and scoring chapter, as many questions would appear in the CBSE Board exams.

You will see a lot of these equations, diagrams, and key concepts on your exams and in your monthly quizzes. After going through the heredity and evolution class 10 ncert solutions, go through this ebook to review each important formula quickly and learn examples that you might encounter on your exams.

Download Ebook - NCERT Class 10 Science: Chapterwise Important Formulas, Diagrams, And Points

Heredity and Evolution Class 10 Solutions - Important Topics

Let's take a quick look at the topics and subtopics covered in the Class 10 Biology Heredity and Evolution NCERT Solutions before diving into the specifics of the Biology NCERT Solutions For Class 10 Science Chapter 9 Heredity and Evolution:

  • Heredity And Evolution

  • Accumulation Of Variation During Reproduction

  • Heredity

    • Inherited Traits

    • Rules for the Inheritance of Traits – Mendel’s Contributions

    • How do these traits get Expressed

    • Sex Determination

  • Evolution

    • An Illustration

    • Acquired and Inherited Traits

  • Speciation

  • Evolution And Classification

    • Tracing Evolutionary Relationships

    • Fossils

    • Evolution by Stages

  • Evolution Should Not Be Equated With ‘Progress’

    • Human Evolution

JEE Main Important Physics formulas

As per latest 2024 syllabus. Physics formulas, equations, & laws of class 11 & 12th chapters

Importance of Class 10 Heredity and Evolution Solutions

Generally, 4 types of questions are asked in class 10 science board exam i.e. very short answer type, short answer type, long answer type and practical based questions which are for 1 to 5 marks from the NCERT Solutions For Class 10 Science Chapter 9 Heredity and Evolution. In CBSE 2018 board exams, 3 questions were asked from this chapter for 10 marks. You can easily score these 10 marks if you know the Solutions of NCERT Class 10 Science Chapter 9 Heredity and Evolution.

NCERT Solutions for Class 10th Science - Chapter wise

Solutions of NCERT Class 10th - Subject-Wise

Benefits of NCERT Solutions for Class 10 Science Chapter 9 Heredity and Evolution:

  • You will have the detailed CBSE NCERT solutions Class 10 Science for chapter 9 Heredity and Evolution in your hands. You can use them to understand the concepts as well as learn how to answer them in the board exams

  • Since practice is an essential part of your board exam preparation, check the questions asked in the previous papers on this chapter and match the questions asked. You can then use the solutions of NCERT Solutions for Class 10 Science chapter 9 Heredity and Evolution to know the answers. If the same questions or similar ones are asked, you will be able to answer them.

Highlights of NCERT Solutions for Class 10 Science Chapter 9 Heredity and Evolution

  • The NCERT (CBSE) Syllabus and Books are strictly followed in Heredity and Evolution Class 10 Solutions.
  • heredity and evolution class 10 exercise answers are easy-to-understand and comprehensive
  • you will find clear and concise solutions to class in the heredity and evolution PDF.
  • The Heredity and Evolution Class 10 NCERT Solutions help clear doubt and give in-depth knowledge of concepts.
  • Class 10 Science Ch 9 Question Answer are prepared by subject matter experts in the easiest possible way.
  • Stepwise solutions are provided here in Class 10 Heredity and Evolution Solutions.
  • Diagrams are provided in Class 10 Science Chapter 9 pdf wherever required to better understand.
  • Class 10 Science ch 9 Solutions will help you to score good marks in board exams.
  • Heredity and evolution Class 10 questions and answers are accessible to everyone at any time anywhere without any difficulty.

Also Check NCERT Books and NCERT Syllabus here:

Frequently Asked Question (FAQs)

1. What are the important topics of Class 10 Science Chapter 9 Heredity and Evolution ?
  • Heredity

  • Mendel’s Contribution

  • Laws for Inheritance of Traits

  • Sex Determination

  • Basic Concepts of Evolution

2. What are the topics covered in the Heredity and Evolution of NCERT Solutions for Class 10 Science?

The topics covered in Heredity and Evolution of NCERT Solutions for Class 10 Science are as follows:

  • Laws of Inheritance
  • Mendel’s Experiments
  • Monohybrid Cross
  • Dihybrid Cross
  • Evolution and Its Theories
  • Evidence of Evolution
3. What is the weightage of Chapter 9 Heredity and Evolution in CBSE Class 10 board final exam ?

1-3 marks questions can be expected from  Heredity and Evolution for CBSE Class 10 Science board exam. Students can study using NCERT book, NCERT exemplar and CBSE previous year papers.

4. Where can I find the complete solutions of NCERT class 10 Science ?
5. What are analogous organs according to Chapter 9 of NCERT Solutions for Class 10 Science?

Organs from different species with similar functions are referred to as "analogous organs." Even though these organs' anatomical characteristics may vary, their functions are the same in all organisms. In order to understand the concepts clearly while completing the textbook questions, students can refer to Chapter 9 of the NCERT Solutions for Class 10 Science. Both chapter-wise and exercise-wise solutions are available, which can be used by the students anytime, anywhere.

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A block of mass 0.50 kg is moving with a speed of 2.00 ms-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

Option 1)

0.34\; J

Option 2)

0.16\; J

Option 3)

1.00\; J

Option 4)

0.67\; J

A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times.  Assume that the potential energy lost each time he lowers the mass is dissipated.  How much fat will he use up considering the work done only when the weight is lifted up ?  Fat supplies 3.8×107 J of energy per kg which is converted to mechanical energy with a 20% efficiency rate.  Take g = 9.8 ms−2 :

Option 1)

2.45×10−3 kg

Option 2)

 6.45×10−3 kg

Option 3)

 9.89×10−3 kg

Option 4)

12.89×10−3 kg

 

An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range

Option 1)

2,000 \; J - 5,000\; J

Option 2)

200 \, \, J - 500 \, \, J

Option 3)

2\times 10^{5}J-3\times 10^{5}J

Option 4)

20,000 \, \, J - 50,000 \, \, J

A particle is projected at 600   to the horizontal with a kinetic energy K. The kinetic energy at the highest point

Option 1)

K/2\,

Option 2)

\; K\;

Option 3)

zero\;

Option 4)

K/4

In the reaction,

2Al_{(s)}+6HCL_{(aq)}\rightarrow 2Al^{3+}\, _{(aq)}+6Cl^{-}\, _{(aq)}+3H_{2(g)}

Option 1)

11.2\, L\, H_{2(g)}  at STP  is produced for every mole HCL_{(aq)}  consumed

Option 2)

6L\, HCl_{(aq)}  is consumed for ever 3L\, H_{2(g)}      produced

Option 3)

33.6 L\, H_{2(g)} is produced regardless of temperature and pressure for every mole Al that reacts

Option 4)

67.2\, L\, H_{2(g)} at STP is produced for every mole Al that reacts .

How many moles of magnesium phosphate, Mg_{3}(PO_{4})_{2} will contain 0.25 mole of oxygen atoms?

Option 1)

0.02

Option 2)

3.125 × 10-2

Option 3)

1.25 × 10-2

Option 4)

2.5 × 10-2

If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

Option 1)

decrease twice

Option 2)

increase two fold

Option 3)

remain unchanged

Option 4)

be a function of the molecular mass of the substance.

With increase of temperature, which of these changes?

Option 1)

Molality

Option 2)

Weight fraction of solute

Option 3)

Fraction of solute present in water

Option 4)

Mole fraction.

Number of atoms in 558.5 gram Fe (at. wt.of Fe = 55.85 g mol-1) is

Option 1)

twice that in 60 g carbon

Option 2)

6.023 × 1022

Option 3)

half that in 8 g He

Option 4)

558.5 × 6.023 × 1023

A pulley of radius 2 m is rotated about its axis by a force F = (20t - 5t2) newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10 kg m2 , the number of rotations made by the pulley before its direction of motion if reversed, is

Option 1)

less than 3

Option 2)

more than 3 but less than 6

Option 3)

more than 6 but less than 9

Option 4)

more than 9

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3 Jobs Available
Data Analyst

The invention of the database has given fresh breath to the people involved in the data analytics career path. Analysis refers to splitting up a whole into its individual components for individual analysis. Data analysis is a method through which raw data are processed and transformed into information that would be beneficial for user strategic thinking.

Data are collected and examined to respond to questions, evaluate hypotheses or contradict theories. It is a tool for analyzing, transforming, modeling, and arranging data with useful knowledge, to assist in decision-making and methods, encompassing various strategies, and is used in different fields of business, research, and social science.

3 Jobs Available
Geothermal Engineer

Individuals who opt for a career as geothermal engineers are the professionals involved in the processing of geothermal energy. The responsibilities of geothermal engineers may vary depending on the workplace location. Those who work in fields design facilities to process and distribute geothermal energy. They oversee the functioning of machinery used in the field.

3 Jobs Available
Remote Sensing Technician

Individuals who opt for a career as a remote sensing technician possess unique personalities. Remote sensing analysts seem to be rational human beings, they are strong, independent, persistent, sincere, realistic and resourceful. Some of them are analytical as well, which means they are intelligent, introspective and inquisitive. 

Remote sensing scientists use remote sensing technology to support scientists in fields such as community planning, flight planning or the management of natural resources. Analysing data collected from aircraft, satellites or ground-based platforms using statistical analysis software, image analysis software or Geographic Information Systems (GIS) is a significant part of their work. Do you want to learn how to become remote sensing technician? There's no need to be concerned; we've devised a simple remote sensing technician career path for you. Scroll through the pages and read.

3 Jobs Available
Geotechnical engineer

The role of geotechnical engineer starts with reviewing the projects needed to define the required material properties. The work responsibilities are followed by a site investigation of rock, soil, fault distribution and bedrock properties on and below an area of interest. The investigation is aimed to improve the ground engineering design and determine their engineering properties that include how they will interact with, on or in a proposed construction. 

The role of geotechnical engineer in mining includes designing and determining the type of foundations, earthworks, and or pavement subgrades required for the intended man-made structures to be made. Geotechnical engineering jobs are involved in earthen and concrete dam construction projects, working under a range of normal and extreme loading conditions. 

3 Jobs Available
Cartographer

How fascinating it is to represent the whole world on just a piece of paper or a sphere. With the help of maps, we are able to represent the real world on a much smaller scale. Individuals who opt for a career as a cartographer are those who make maps. But, cartography is not just limited to maps, it is about a mixture of art, science, and technology. As a cartographer, not only you will create maps but use various geodetic surveys and remote sensing systems to measure, analyse, and create different maps for political, cultural or educational purposes.

3 Jobs Available
Budget Analyst

Budget analysis, in a nutshell, entails thoroughly analyzing the details of a financial budget. The budget analysis aims to better understand and manage revenue. Budget analysts assist in the achievement of financial targets, the preservation of profitability, and the pursuit of long-term growth for a business. Budget analysts generally have a bachelor's degree in accounting, finance, economics, or a closely related field. Knowledge of Financial Management is of prime importance in this career.

4 Jobs Available
Data Analyst

The invention of the database has given fresh breath to the people involved in the data analytics career path. Analysis refers to splitting up a whole into its individual components for individual analysis. Data analysis is a method through which raw data are processed and transformed into information that would be beneficial for user strategic thinking.

Data are collected and examined to respond to questions, evaluate hypotheses or contradict theories. It is a tool for analyzing, transforming, modeling, and arranging data with useful knowledge, to assist in decision-making and methods, encompassing various strategies, and is used in different fields of business, research, and social science.

3 Jobs Available
Product Manager

A Product Manager is a professional responsible for product planning and marketing. He or she manages the product throughout the Product Life Cycle, gathering and prioritising the product. A product manager job description includes defining the product vision and working closely with team members of other departments to deliver winning products.  

3 Jobs Available
Investment Banker

An Investment Banking career involves the invention and generation of capital for other organizations, governments, and other entities. Individuals who opt for a career as Investment Bankers are the head of a team dedicated to raising capital by issuing bonds. Investment bankers are termed as the experts who have their fingers on the pulse of the current financial and investing climate. Students can pursue various Investment Banker courses, such as Banking and Insurance, and Economics to opt for an Investment Banking career path.

3 Jobs Available
Underwriter

An underwriter is a person who assesses and evaluates the risk of insurance in his or her field like mortgage, loan, health policy, investment, and so on and so forth. The underwriter career path does involve risks as analysing the risks means finding out if there is a way for the insurance underwriter jobs to recover the money from its clients. If the risk turns out to be too much for the company then in the future it is an underwriter who will be held accountable for it. Therefore, one must carry out his or her job with a lot of attention and diligence.

3 Jobs Available
Finance Executive
3 Jobs Available
Operations Manager

Individuals in the operations manager jobs are responsible for ensuring the efficiency of each department to acquire its optimal goal. They plan the use of resources and distribution of materials. The operations manager's job description includes managing budgets, negotiating contracts, and performing administrative tasks.

3 Jobs Available
Welding Engineer

Welding Engineer Job Description: A Welding Engineer work involves managing welding projects and supervising welding teams. He or she is responsible for reviewing welding procedures, processes and documentation. A career as Welding Engineer involves conducting failure analyses and causes on welding issues. 

5 Jobs Available
Transportation Planner

A career as Transportation Planner requires technical application of science and technology in engineering, particularly the concepts, equipment and technologies involved in the production of products and services. In fields like land use, infrastructure review, ecological standards and street design, he or she considers issues of health, environment and performance. A Transportation Planner assigns resources for implementing and designing programmes. He or she is responsible for assessing needs, preparing plans and forecasts and compliance with regulations.

3 Jobs Available
Plumber

An expert in plumbing is aware of building regulations and safety standards and works to make sure these standards are upheld. Testing pipes for leakage using air pressure and other gauges, and also the ability to construct new pipe systems by cutting, fitting, measuring and threading pipes are some of the other more involved aspects of plumbing. Individuals in the plumber career path are self-employed or work for a small business employing less than ten people, though some might find working for larger entities or the government more desirable.

2 Jobs Available
Construction Manager

Individuals who opt for a career as construction managers have a senior-level management role offered in construction firms. Responsibilities in the construction management career path are assigning tasks to workers, inspecting their work, and coordinating with other professionals including architects, subcontractors, and building services engineers.

2 Jobs Available
Urban Planner

Urban Planning careers revolve around the idea of developing a plan to use the land optimally, without affecting the environment. Urban planning jobs are offered to those candidates who are skilled in making the right use of land to distribute the growing population, to create various communities. 

Urban planning careers come with the opportunity to make changes to the existing cities and towns. They identify various community needs and make short and long-term plans accordingly.

2 Jobs Available
Highway Engineer

Highway Engineer Job Description: A Highway Engineer is a civil engineer who specialises in planning and building thousands of miles of roads that support connectivity and allow transportation across the country. He or she ensures that traffic management schemes are effectively planned concerning economic sustainability and successful implementation.

2 Jobs Available
Environmental Engineer

Individuals who opt for a career as an environmental engineer are construction professionals who utilise the skills and knowledge of biology, soil science, chemistry and the concept of engineering to design and develop projects that serve as solutions to various environmental problems. 

2 Jobs Available
Naval Architect

A Naval Architect is a professional who designs, produces and repairs safe and sea-worthy surfaces or underwater structures. A Naval Architect stays involved in creating and designing ships, ferries, submarines and yachts with implementation of various principles such as gravity, ideal hull form, buoyancy and stability. 

2 Jobs Available
Orthotist and Prosthetist

Orthotists and Prosthetists are professionals who provide aid to patients with disabilities. They fix them to artificial limbs (prosthetics) and help them to regain stability. There are times when people lose their limbs in an accident. In some other occasions, they are born without a limb or orthopaedic impairment. Orthotists and prosthetists play a crucial role in their lives with fixing them to assistive devices and provide mobility.

6 Jobs Available
Veterinary Doctor
5 Jobs Available
Pathologist

A career in pathology in India is filled with several responsibilities as it is a medical branch and affects human lives. The demand for pathologists has been increasing over the past few years as people are getting more aware of different diseases. Not only that, but an increase in population and lifestyle changes have also contributed to the increase in a pathologist’s demand. The pathology careers provide an extremely huge number of opportunities and if you want to be a part of the medical field you can consider being a pathologist. If you want to know more about a career in pathology in India then continue reading this article.

5 Jobs Available
Speech Therapist
4 Jobs Available
Gynaecologist

Gynaecology can be defined as the study of the female body. The job outlook for gynaecology is excellent since there is evergreen demand for one because of their responsibility of dealing with not only women’s health but also fertility and pregnancy issues. Although most women prefer to have a women obstetrician gynaecologist as their doctor, men also explore a career as a gynaecologist and there are ample amounts of male doctors in the field who are gynaecologists and aid women during delivery and childbirth. 

4 Jobs Available
Oncologist

An oncologist is a specialised doctor responsible for providing medical care to patients diagnosed with cancer. He or she uses several therapies to control the cancer and its effect on the human body such as chemotherapy, immunotherapy, radiation therapy and biopsy. An oncologist designs a treatment plan based on a pathology report after diagnosing the type of cancer and where it is spreading inside the body.

3 Jobs Available
Audiologist

The audiologist career involves audiology professionals who are responsible to treat hearing loss and proactively preventing the relevant damage. Individuals who opt for a career as an audiologist use various testing strategies with the aim to determine if someone has a normal sensitivity to sounds or not. After the identification of hearing loss, a hearing doctor is required to determine which sections of the hearing are affected, to what extent they are affected, and where the wound causing the hearing loss is found. As soon as the hearing loss is identified, the patients are provided with recommendations for interventions and rehabilitation such as hearing aids, cochlear implants, and appropriate medical referrals. While audiology is a branch of science that studies and researches hearing, balance, and related disorders.

3 Jobs Available
Hospital Administrator

The hospital Administrator is in charge of organising and supervising the daily operations of medical services and facilities. This organising includes managing of organisation’s staff and its members in service, budgets, service reports, departmental reporting and taking reminders of patient care and services.

2 Jobs Available
Actor

For an individual who opts for a career as an actor, the primary responsibility is to completely speak to the character he or she is playing and to persuade the crowd that the character is genuine by connecting with them and bringing them into the story. This applies to significant roles and littler parts, as all roles join to make an effective creation. Here in this article, we will discuss how to become an actor in India, actor exams, actor salary in India, and actor jobs. 

4 Jobs Available
Acrobat

Individuals who opt for a career as acrobats create and direct original routines for themselves, in addition to developing interpretations of existing routines. The work of circus acrobats can be seen in a variety of performance settings, including circus, reality shows, sports events like the Olympics, movies and commercials. Individuals who opt for a career as acrobats must be prepared to face rejections and intermittent periods of work. The creativity of acrobats may extend to other aspects of the performance. For example, acrobats in the circus may work with gym trainers, celebrities or collaborate with other professionals to enhance such performance elements as costume and or maybe at the teaching end of the career.

3 Jobs Available
Video Game Designer

Career as a video game designer is filled with excitement as well as responsibilities. A video game designer is someone who is involved in the process of creating a game from day one. He or she is responsible for fulfilling duties like designing the character of the game, the several levels involved, plot, art and similar other elements. Individuals who opt for a career as a video game designer may also write the codes for the game using different programming languages.

Depending on the video game designer job description and experience they may also have to lead a team and do the early testing of the game in order to suggest changes and find loopholes.

3 Jobs Available
Radio Jockey

Radio Jockey is an exciting, promising career and a great challenge for music lovers. If you are really interested in a career as radio jockey, then it is very important for an RJ to have an automatic, fun, and friendly personality. If you want to get a job done in this field, a strong command of the language and a good voice are always good things. Apart from this, in order to be a good radio jockey, you will also listen to good radio jockeys so that you can understand their style and later make your own by practicing.

A career as radio jockey has a lot to offer to deserving candidates. If you want to know more about a career as radio jockey, and how to become a radio jockey then continue reading the article.

3 Jobs Available
Choreographer

The word “choreography" actually comes from Greek words that mean “dance writing." Individuals who opt for a career as a choreographer create and direct original dances, in addition to developing interpretations of existing dances. A Choreographer dances and utilises his or her creativity in other aspects of dance performance. For example, he or she may work with the music director to select music or collaborate with other famous choreographers to enhance such performance elements as lighting, costume and set design.

2 Jobs Available
Videographer
2 Jobs Available
Multimedia Specialist

A multimedia specialist is a media professional who creates, audio, videos, graphic image files, computer animations for multimedia applications. He or she is responsible for planning, producing, and maintaining websites and applications. 

2 Jobs Available
Social Media Manager

A career as social media manager involves implementing the company’s or brand’s marketing plan across all social media channels. Social media managers help in building or improving a brand’s or a company’s website traffic, build brand awareness, create and implement marketing and brand strategy. Social media managers are key to important social communication as well.

2 Jobs Available
Copy Writer

In a career as a copywriter, one has to consult with the client and understand the brief well. A career as a copywriter has a lot to offer to deserving candidates. Several new mediums of advertising are opening therefore making it a lucrative career choice. Students can pursue various copywriter courses such as Journalism, Advertising, Marketing Management. Here, we have discussed how to become a freelance copywriter, copywriter career path, how to become a copywriter in India, and copywriting career outlook. 

5 Jobs Available
Journalist

Careers in journalism are filled with excitement as well as responsibilities. One cannot afford to miss out on the details. As it is the small details that provide insights into a story. Depending on those insights a journalist goes about writing a news article. A journalism career can be stressful at times but if you are someone who is passionate about it then it is the right choice for you. If you want to know more about the media field and journalist career then continue reading this article.

3 Jobs Available
Publisher

For publishing books, newspapers, magazines and digital material, editorial and commercial strategies are set by publishers. Individuals in publishing career paths make choices about the markets their businesses will reach and the type of content that their audience will be served. Individuals in book publisher careers collaborate with editorial staff, designers, authors, and freelance contributors who develop and manage the creation of content.

3 Jobs Available
Vlogger

In a career as a vlogger, one generally works for himself or herself. However, once an individual has gained viewership there are several brands and companies that approach them for paid collaboration. It is one of those fields where an individual can earn well while following his or her passion. 

Ever since internet costs got reduced the viewership for these types of content has increased on a large scale. Therefore, a career as a vlogger has a lot to offer. If you want to know more about the Vlogger eligibility, roles and responsibilities then continue reading the article. 

3 Jobs Available
Editor

Individuals in the editor career path is an unsung hero of the news industry who polishes the language of the news stories provided by stringers, reporters, copywriters and content writers and also news agencies. Individuals who opt for a career as an editor make it more persuasive, concise and clear for readers. In this article, we will discuss the details of the editor's career path such as how to become an editor in India, editor salary in India and editor skills and qualities.

3 Jobs Available
Linguist

Linguistic meaning is related to language or Linguistics which is the study of languages. A career as a linguistic meaning, a profession that is based on the scientific study of language, and it's a very broad field with many specialities. Famous linguists work in academia, researching and teaching different areas of language, such as phonetics (sounds), syntax (word order) and semantics (meaning). 

Other researchers focus on specialities like computational linguistics, which seeks to better match human and computer language capacities, or applied linguistics, which is concerned with improving language education. Still, others work as language experts for the government, advertising companies, dictionary publishers and various other private enterprises. Some might work from home as freelance linguists. Philologist, phonologist, and dialectician are some of Linguist synonym. Linguists can study French, German, Italian

2 Jobs Available
Public Relation Executive
2 Jobs Available
Travel Journalist

The career of a travel journalist is full of passion, excitement and responsibility. Journalism as a career could be challenging at times, but if you're someone who has been genuinely enthusiastic about all this, then it is the best decision for you. Travel journalism jobs are all about insightful, artfully written, informative narratives designed to cover the travel industry. Travel Journalist is someone who explores, gathers and presents information as a news article.

2 Jobs Available
Welding Engineer

Welding Engineer Job Description: A Welding Engineer work involves managing welding projects and supervising welding teams. He or she is responsible for reviewing welding procedures, processes and documentation. A career as Welding Engineer involves conducting failure analyses and causes on welding issues. 

5 Jobs Available
QA Manager
4 Jobs Available
Quality Controller

A quality controller plays a crucial role in an organisation. He or she is responsible for performing quality checks on manufactured products. He or she identifies the defects in a product and rejects the product. 

A quality controller records detailed information about products with defects and sends it to the supervisor or plant manager to take necessary actions to improve the production process.

3 Jobs Available
Product Manager

A Product Manager is a professional responsible for product planning and marketing. He or she manages the product throughout the Product Life Cycle, gathering and prioritising the product. A product manager job description includes defining the product vision and working closely with team members of other departments to deliver winning products.  

3 Jobs Available
Production Manager
3 Jobs Available
Merchandiser
2 Jobs Available
QA Lead

A QA Lead is in charge of the QA Team. The role of QA Lead comes with the responsibility of assessing services and products in order to determine that he or she meets the quality standards. He or she develops, implements and manages test plans. 

2 Jobs Available
Metallurgical Engineer

A metallurgical engineer is a professional who studies and produces materials that bring power to our world. He or she extracts metals from ores and rocks and transforms them into alloys, high-purity metals and other materials used in developing infrastructure, transportation and healthcare equipment. 

2 Jobs Available
Azure Administrator

An Azure Administrator is a professional responsible for implementing, monitoring, and maintaining Azure Solutions. He or she manages cloud infrastructure service instances and various cloud servers as well as sets up public and private cloud systems. 

4 Jobs Available
AWS Solution Architect

An AWS Solution Architect is someone who specializes in developing and implementing cloud computing systems. He or she has a good understanding of the various aspects of cloud computing and can confidently deploy and manage their systems. He or she troubleshoots the issues and evaluates the risk from the third party. 

4 Jobs Available
QA Manager
4 Jobs Available
Computer Programmer

Careers in computer programming primarily refer to the systematic act of writing code and moreover include wider computer science areas. The word 'programmer' or 'coder' has entered into practice with the growing number of newly self-taught tech enthusiasts. Computer programming careers involve the use of designs created by software developers and engineers and transforming them into commands that can be implemented by computers. These commands result in regular usage of social media sites, word-processing applications and browsers.

3 Jobs Available
ITSM Manager
3 Jobs Available
Product Manager

A Product Manager is a professional responsible for product planning and marketing. He or she manages the product throughout the Product Life Cycle, gathering and prioritising the product. A product manager job description includes defining the product vision and working closely with team members of other departments to deliver winning products.  

3 Jobs Available
Information Security Manager

Individuals in the information security manager career path involves in overseeing and controlling all aspects of computer security. The IT security manager job description includes planning and carrying out security measures to protect the business data and information from corruption, theft, unauthorised access, and deliberate attack 

3 Jobs Available
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