The Elements Multiple Choice Questions (MCQ) PDF Download

MCQ 1: Hydrogen is also used in

1. paint industries
2. fertilizer
3. rocket fuel
4. all of them

MCQ 2: Oxygen gas is a gas that possesses about half of the mass of

1. earth's crust
2. space
3. land
4. body

MCQ 3: It is used to make fertilizers, lead-acid batteries, and in many industrial processes and is called

1. zinc
2. gold
3. lead
4. Sulphur

MCQ 4: Gas used in electrical generators as a rotor coolant is

1. nitrogen
2. carbon
3. hydrogen
4. oxygen

MCQ 5: This is a silvery-white, lightweight metal, it is soft and malleable and is called

1. gold
2. aluminum
3. steel
4. iron