Question 1

How much time does light reflected from the Moon take to reach the Earth?

Accepted Answer

1 minute 28 seconds

Question 2

What are the two necessary conditions for a self-sustained chain reaction in a nuclear reactor?

Accepted Answer

Each fission releases more than one neutron AND fast neutrons are slowed by moderator

Question 3

Which instrument measures the temperature of liquids?

Accepted Answer

Thermometer

Question 4

Pascal is the SI unit of which quantity?

Accepted Answer

Pressure

Question 5

Air conditioner controls temperature and air speed. What additional parameter does it also control?

Accepted Answer

Humidity of air

Question 6

How much time does sunlight take to reach the Earth from the Sun?

Accepted Answer

8 minutes 19 seconds (499 seconds)

Question 7

What is the fundamental difference between a nuclear reactor and an atom bomb?

Accepted Answer

Reactor has controlled chain reaction bomb has uncontrolled

Question 8

Which SI unit is used to measure voltage?

Accepted Answer

Volt

Question 9

What is the SI unit of amount of substance?

Accepted Answer

Mole

Question 10

What is the key property of a Black Hole regarding its gravitational field?

Accepted Answer

Its gravitational field is so strong that even light cannot escape

Science One Liner Questions with Answers

What is the SI unit of amount of substance?