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Science Quiz on How Things Work :25.08.2020

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Question 1

Direction: Answer the following question by selecting the correct / most appropriate options.
A rubber sucker, when pressed on a surface sticks to it because of :

Question 2

Aman keeps a plastic bottle, a wooden spoon and a metallic spoon in a closed room overnight. The room temperature is 30 °C. In the morning he records the temperatures of the three objects as T1, T2 and T3. Which of the following most likely represents the relation between them?

Question 3

The pressure in a fluid that is at rest

Question 4

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 5

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

Question 6

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 7

The focal length of a spherical mirror is equal to :

Question 8

Directions: Answer the following questions by selecting the most appropriate option.
The lens used to rectify long sight is

Question 9

Directions: Answer the following questions by selecting the most appropriate option.
Barometer is used to

Question 10

How many primary colours are there?
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