Question 1

Which instrument measures humidity?

Accepted Answer

Hygrometer

Question 2

Which instrument measures temperature?

Accepted Answer

Thermometer

Question 3

Which quantity has no direction?

Accepted Answer

Speed

Question 4

Which of the following is a vector quantity?

Accepted Answer

Velocity

Question 5

What phenomenon causes a pen to dry out and how does putting the cap on prevent it?

Accepted Answer

Ink evaporates by absorbing latent heat from surroundings; cap blocks evaporation by saturating air space

Question 6

Why does a lunar or solar eclipse not occur every month?

Accepted Answer

Because Moon's orbit is tilted at 5° to Earth's orbital plane around Sun

Question 7

What is the significance of India's three-stage nuclear power program?

Accepted Answer

To utilize India's thorium reserves through U-233 fuel cycle eventually

Question 8

Which SI unit is used to measure work done?

Accepted Answer

Joule

Question 9

What is measured in Hertz (Hz)?

Accepted Answer

Frequency

Question 10

Why do biscuits kept in a refrigerator without a cover become dry and crispy?

Accepted Answer

Cold dry air inside refrigerator absorbs moisture from biscuits and releases it outside as liquid

Science One Liner Questions with Answers

Which of the following is a vector quantity?