Question 1

Among cosmic rays, light, radio waves and X-rays — which has the maximum speed?

Accepted Answer

All travel at the same speed in vacuum

Question 2

Which substance is used as Coolant in nuclear reactors to remove heat?

Accepted Answer

Cold water and Liquid Sodium

Question 3

Which instrument is used to observe stars and planets?

Accepted Answer

Telescope

Question 4

Lumen is the unit of which quantity?

Accepted Answer

Luminous flux

Question 5

What is the Solar Power Satellite (SPSP) concept about?

Accepted Answer

A satellite that collects solar energy in space and transmits it to Earth as microwaves

Question 6

Why does light appear to travel in a straight line?

Accepted Answer

Because light has very small wavelength

Question 7

Among Uranium Boron Calcium and Plutonium which is NOT a nuclear fuel?

Accepted Answer

Calcium

Question 8

Which unit is used to measure resistance?

Accepted Answer

Ohm

Question 9

Which statement is NOT correctly matched?

Accepted Answer

Light year - unit of power

Question 10

In large cold storage plants ammonia is used as refrigerant at what conditions?

Accepted Answer

At high pressure and low temperature

Science One Liner Questions with Answers

Which statement is NOT correctly matched?