Helium and Hydrogen

Total Questions: 6

1 - Which gas is used in balloons?

A ) Hydrogen
B ) Methane
C ) Helium ✅
D ) None of these

2 - Which gas is used in airships?

A ) Hydrogen
B ) Methane
C ) Helium ✅
D ) Carbon dioxide

3 - The gas used in the manufacturing of vanaspati ghee is?

A ) Hydrogen ✅
B ) Helium
C ) Methane
D ) None of these

4 - Which gas is combustible?

A ) Helium
B ) Hydrogen ✅
C ) Nitrogen
D ) None of these

5 - The most abundant element in the Universe is-----:
A ) Oxygen
B ) Iron
C ) Hydrogen ✅
D ) nitrogen

6 - Brass gets discolored in air because of the presence of which of the following gases in the air?

A ) Hydrogen sulphide ✅
B ) Nitrogen
C ) Oxygen
D ) Carbon dioxide
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