Which of the following care should be taken for an oxygen cylinder by a medical technician?

A. Place it at a cool and dry place

C. Store it in a humid environment

D. Keep it exposed to direct sunlight

Everyday Science · Everyday & Industrial Chemistry · page 4 of 16

Gases in Everyday Life MCQs with Answers

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Gases in Everyday Life MCQs (31–40)

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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31.
The color of the Cylinder of CO₂ is:
Correct Answer: C. Black
One-liner
The color of the CO₂ (carbon dioxide) cylinder is black.
32.
Which of the following care should be taken for an oxygen cylinder by a medical technician?
Correct Answer: A. Place it at a cool and dry place
One-liner
An oxygen cylinder should be placed at a cool and dry place to prevent combustion hazards and ensure safe storage.
33.
Ozone is a gas?
Correct Answer: C. Blue
One-liner
Ozone is a blue gas.
34.
LPG stands for _?
Correct Answer: A. Liquefied Petroleum Gas
One-liner
LPG stands for Liquefied Petroleum Gas.
35.
Past Paper MCQ
Which gas is used in welding?
Correct Answer: B. Acetylene
One-liner
Acetylene is the gas commonly used in welding due to its ability to produce a very high-temperature flame when burned with oxygen.
36.
A container with a porous wall is filled with He, H2, N2, and CO2. Which one of these gases will diffuse out of the container in the least time?
Correct Answer: B. H2
One-liner
H2 (Hydrogen) will diffuse out in the least time because it has the lowest molecular mass among the given gases, and according to Graham's law, the rate of diffusion is inversely proportional to the square root of molecular mass.
37.
Calculate volume for 10.0 moles of O₂ gas at STP?
Correct Answer: B. 224 L
One-liner
The volume of 10.0 moles of O₂ gas at STP is 224 L.
38.
Compressed Natural Gas (CNG) has the same chemical composition as that of _?
Correct Answer: B. Sui Gas
One-liner
Compressed Natural Gas (CNG) has the same chemical composition as that of Sui Gas, as both are primarily methane (CH₄).
39.
Which take the shape and volume of a container they are placed in?
Correct Answer: C. Gases
One-liner
Gases take both the shape and volume of the container they are placed in, as they expand to fill any available space.
40.
The colorless, odorless gas that produces a whitish solid on compression is ?
Correct Answer: B. Carbon dioxide
One-liner
The colorless, odorless gas that produces a whitish solid on compression is carbon dioxide.

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Gases in Everyday Life MCQs with Answers

Gases in Everyday Life MCQs (31–40)

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