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Science Quiz on How Things Work : 06.03.2021

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Question 1

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

Question 2

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 3

Direction: Answer the following questions by selecting the correct/most appropriate options.
A block of iron dropped in a vessel of water, sinks to the bottom. This is because:

Question 4

Direction: Answer the following question by selecting the most appropriate option.
What is the unit of acceleration?

Question 5

Directions: Answer the following questions by selecting the most appropriate option.
A falling drop of rain water acquires the spherical shape due to

Question 6

Consider the following statements:

i. Magnetic field lines are curved inside a bar magnet.

ii. Magnetic field lines come closer as we move away from the magnet.

iii. Magnetic field lines are directed from North Pole to South Pole outside a bar magnet.

iv. Magnetic field lines are directed from South Pole to North Pole inside a bar magnet.

Which of the above is correct about magnetic field lines?

Question 7

What is the normal temperature of human body?

Question 8

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 9

Inside the petals, in the middle of a flower, we find a thin powdery structure called

Question 10

Which of the following is not a part of mechanical energy?
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