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Science Quiz on How Things Work :27.10.2020

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Question 1

Which of the following is the major difference between mass and weight of an object?

Question 2

The focal length of a spherical mirror is equal to :

Question 3

Direction: Answer the following question by selecting the correct / most appropriate options.
When a candle burns :
a) its size decreases.
b) there is melting of wax.
c) flame and soot can be seen.
d) melted wax also solids.
From the above observations, which one of the following is correct?

Question 4

Direction: Answer the following question by selecting the correct / most appropriate options.
In the event of a thunderstorm :

Question 5

Direction: Answer the following question by selecting the correct / most appropriate options.
Each cell in our body contains DNA. We also have proteins and fats in our body. What is common among DNA, proteins and fats?

Question 6

Direction: Answer the following question by selecting the correct / most appropriate options.
The occurrence of seasons on earth is due to the fact that :

Question 7

The measure of amount of matter in an object is defined as

Question 8

Direction: Answer the following question by selecting the most appropriate option.
By which method age of the Earth can be determined ?

Question 9

Direction: Answer the following questions by selecting the correct/most appropriate options.
There are two planets in our solar system which rotate from east to west. These planets are:

Question 10

Directions: Answer the following questions by selecting the most appropriate option.
A radioactive substance has a half-life of five months. Three-fourth of the substance will decay in :
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Oct 27CTET & State TET Exams