Question : Which of the following gases is used in a bulb?

Option 1: Hydrogen

Option 2: Carbon dioxide

Option 3: Carbon monoxide

Option 4: Argon

Question : Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are

Option 1: Boron and Cadmium

Option 2: Boron and Plutonium

Option 3: Cadmium and Uranium

Option 4: Uranium and Boron

Question : What is the valency of Boron?

Option 1: 2

Option 2: 3

Option 3: 4

Option 4: 1

Question : Ozone consists of which of the following?

Option 1: Oxygen only

Option 2: Oxygen and Nitrogen

Option 3: Hydrogen and Carbon

Option 4: Oxygen and Carbon

Question : Which of the following is used as control rods in Atomic reactor?

Option 1: Sodium

Option 2: Uranium

Option 3: Graphite

Option 4: Boron