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Chemistry

Chemistry
Which of the following is not a noble gas ?

Helium
Argon
Neon
Hydrogen

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Chemistry
Which one is the lightest element in the periodic table

Carbon
Hydrogen
Oxygen
Helium

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Chemistry
Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be

1 : 16 : 2
2 : 16 : 2
1 : 1 : 1
2 : 16 : 1

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Chemistry
A non-electronic conductor is

Iron
Gas Carbon
None of these
Copper Sulphate

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Chemistry
The most abundant element in the earth’s atmosphere is

Nitrogen
Krypton
Argon
Oxygen

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Chemistry
Helium gas is used in gas balloons instead of hydrogen gas because it is

More stable
Non-combustible
Lighter than hydrogen
More abundant than hydrogen

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MORE MCQ ON Chemistry

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