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NCERT Notes Class 9 to 12 for Quick Revision, Important Formulas, Examples

NCERT Notes Class 9 to 12 for Quick Revision, Important Formulas, Examples

Edited By Irshad Anwar | Updated on Apr 11, 2025 06:07 PM IST

NCERT notes are made for quick revision that provides chapter-wise summaries as per the NCERT curriculum and is designed to simplify learning for students from classes 9 to 12. These notes help in revision, improve understanding, and are extremely useful during exam preparation. They include all the important concepts, definitions, formulas, and key points in an easy-to-understand format.

This Story also Contains
  1. NCERT Notes for Class 9
  2. NCERT Notes For Class 10
  3. NCERT Notes for Class 11
  4. NCERT Notes for Class 12
  5. Benefits of NCERT Notes
NCERT Notes Class 9 to 12 for Quick Revision, Important Formulas, Examples
NCERT Notes Class 9 to 12 for Quick Revision, Important Formulas, Examples

NCERT Solutions and revision notes for all the classes and subjects are handy and are beneficial to save you time. Understanding the chapters is essential for comprehending the topics and their questions and answers. These notes are available in easy-to-understand format, help students understand key concepts quickly and effectively. Download the CBSE Notes for Class 9-12 to use it offline anywhere. Students must go through each topic of all the chapters and subjects in the easiest and most effective way possible with the help of these notes.

NCERT Notes for Class 9

The notes cover subjects like science and maths. The NCERT notes for class 9 help students build strong concepts and are helpful in remembering key topics before exams.

NCERT Notes For Class 10

The notes are written in a way that they align with the board exam pattern. The class 10 NCERT notes offer point-wise explanations of textbook chapters, highlight important terms and provide a focused preparation for the board exams.

NCERT Notes for Class 11

The notes provide topic-wise summaries for subjects like physics, chemistry, biology, and maths. The NCERT notes for class 11 simplify complex topics and are great for last-minute revision for unit tests or finals.

NCERT Notes for Class 12

The notes are written for board exams and competitive exams like JEE, NEET and CUET. The NCERT notes for class 12 include diagrams, formulas, definitions and key explanations that help students remember important information efficiently.

Along with the NCERT notes students can also refer to

Benefits of NCERT Notes

1. The notes are ideal for last-minute preparations before exams.

2. The large and difficult chapters are written as short and easy-to-understand summaries.

3. The help in better understanding of tough concepts.

4. They highlight important points that are frequently asked in the exams.

5. They are available in PDF formats as free online resources.

Also Read

NCERT Syllabus
NCERT Books
NCERT Books for Class 9NCERT Syllabus Class 9
NCERT Books for Class 10
NCERT Syllabus Class 10
NCERT Books for Class 11
NCERT Syllabus Class 11
NCERT Books for Class 12
NCERT Syllabus Class 12

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Popular Questions

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
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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

 
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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
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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
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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 .
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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
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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.
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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.
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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
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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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