Which of the following statements is true about hydrogen gas?

D. It is greenish-yellow in colour

Everyday Science · Everyday & Industrial Chemistry · page 8 of 16

Gases in Everyday Life MCQs with Answers

Includes 38 past paper MCQs (marked).

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Gases in Everyday Life MCQs (71–80)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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71.
Past Paper MCQ
Who invented soda water?
Correct Answer: D. Joseph Priestley
One-liner
Soda water was invented by Joseph Priestley in 1767.
72.
Past Paper MCQ
Which gas can be accumulated in poorly ventilated buildings?
Correct Answer: B. Radon
One-liner
Radon is a radioactive noble gas that can accumulate in poorly ventilated buildings, especially basements, posing a serious lung cancer risk.
73.
Past Paper MCQ
The lightest gas that provides a larger elevation for balloons and is the lightest of all gases is _?
Correct Answer: B. Hydrogen
One-liner
The lightest of all gases is Hydrogen, which provides greater lift for balloons due to its extremely low density.
74.
Past Paper MCQ
The least polluted gas is ?
Correct Answer: D. Chlorine
One-liner
The least polluted gas among common gases is Chlorine, as it is a pure elemental gas and does not contain mixed pollutants.
75.
Past Paper MCQ
Which of the following statements is true about hydrogen gas?
Correct Answer: C. It is combustible
One-liner
Hydrogen gas is combustible and burns with a pale blue flame to form water.
76.
Past Paper MCQ
Which of the following is considered a natural gas?
Correct Answer: C. Biogas
One-liner
Biogas is considered a natural gas because it is produced through the natural anaerobic decomposition of organic matter.
77.
Past Paper MCQ
Which gas is known to damage iron and steel structures?
Correct Answer: D. Sulphur dioxide
One-liner
Sulphur dioxide is the gas known to damage iron and steel structures by accelerating corrosion through acid formation.
78.
Past Paper MCQ
Air is a mixture of _?
Correct Answer: C. Gas
One-liner
Air is a mixture of gases.
79.
Past Paper MCQ
Which of the following gases is commonly used as a refrigerant in domestic refrigerators for cooling?
Correct Answer: D. Ammonia
One-liner
Ammonia is commonly used as a refrigerant in domestic refrigerators for cooling.
80.
Past Paper MCQ
What poisonous gas is produced when coal is burned without enough air supply?
Correct Answer: B. Carbon monoxide
One-liner
The poisonous gas produced when coal is burned without enough air supply is carbon monoxide.

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Gases in Everyday Life MCQs with Answers

Gases in Everyday Life MCQs (71–80)

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