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General Chemistry MCQ Question with Answer

General Chemistry MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 8
The function of nitrogen in air is

to make air a moderate supporter of combustion
to maintain the density of air constant
to prevent the hydrogen in air from exploding
to reduce the poisonous nature of ozone in air
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Question No : 9
One method by which the components of air can be separated is

shaking with caustic soda solution
shaking with water
fractional distillation of liquid air
passing air over heated magnesium
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Question No : 10
The noble gas which is present in microscopic quantities in air is

xenon
krypton
argon
helium
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Question No : 11
The most abundant noble gas present in air is

neon
argon
helium
krypton
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Question No : 12
Which one of the following gases is extremely soluble in water?

Carbon dioxide
Ammonia
Chlorine
Hydrogen sulphide
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Question No : 13
What is 'oxygen mixture'?

A mixture of potassium nitrate and carbon
A mixture of ammonium chloride and sodium nitrate
A mixture of potassium chlorate and manganese dioxide
A mixture of ammonium nitrate and charcoal
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Question No : 14
A mixture of carbon monoxide and hydrogen is

coal gas
producer gas
water gas
gobar gas
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Chemistry set 1 30 3165 Start
Chemistry set 2 30 1745 Start
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Chemistry set 11 30 1508 Start
Chemistry set 12 30 1639 Start