NVS Class 9 Correction Window 2025, Correction Dates, Guidelines

What is education?

A square pyramid has a square as its base

16 x (10+2) =(16x10) + (16x2) : name the property used *

Find the one's digit of the cube of 727 

I don’t think living in (a) ____large city has (b) ____advantages than living in (c) ____small town. In my opinion, living in a small town is (d) ____less dangerous (e) ____living in a big city. (f) ____I am convinced that (g) ____is much healthier and (h) ____stressful. (i) ___ of my family members, for example, live in a small town. (j) ____some reason, (k) ____seem to be much happier and (l) _____energetic than my sister and I (m) ____live in the capital.

In the following statements, tick T against those which are true, and F against those which are false: a. Sound cannot travel in vacuum. b. The number of oscillations per second of a vibrating object is called its time period. c. If the amplitude of vibration is large, sound is feeble. d. For human ears, the audible range is 20 Hz to 20,000 Hz. e. The lower the frequency of vibration, the higher is the pitch. f. Unwanted or unpleasant sound is termed as music. g. Noise pollution may cause partial hearing impairment.

Indicate whether the following statements are True (T) or False (F): a. Oviparous animals give birth to young ones. b Each sperm is a single cell. c. External fertilization takes place in frog. d. A new human individual develops from a cell called gamete. e. Egg laid after fertilization is made up of a single cell. f. Amoeba reproduces by budding. g. Fertilization is necessary even in asexual reproduction. h. Binary fission is a method of asexual reproduction. j. A zygote is formed as a result of fertilization. k. An embryo is made up of a single cell.

Q1.Multiple choice questions1.Which one of the following is a human made resource? (i) Technology (ii) Water. (iii) Forests 2.Which of the following cannot be recycled? (i)Coal (ii) Gold jewellery (iii) Iron Tools 3.Resources which have not been utilised as far but may be used in future are called (i)Potential resources (ii)Developed resources (iii)Ubiquitous resources 4.Resources which replenish at much slower pace than the rate at which they are consumed are known as (i)Renewable resource (ii)Biotic resource (iii)Non-renewable resources

A shopkeeper has a weighing balance containing two iron plates on both sides.but this weighing balance is defective.one plate is 10 % shorter than the another onehe sells apples for rs 27 per kghe puts 1 kg bar on the smaller plate and apples on the other side.Determine the cost price of the apples for the shopkeeper when he faces neither gain nor loss on this transaction.

On the freeway, it is unsafe to drive too slowly or too quickly. The safest driving speeds on the freeway near Allan’s town were scientifically determined to be between the A. and maximum speeds (in miles per hour) according to the equation |x – 55| = 4.2. Which equation can be used to determine the maximum safe driving speed? A. x – 55 = 4.2 B. x – 55 = –4.2 C. x + 55 = 4.2 D. x + 55 = –4.2