As we climb up the mountain, the atmospheric pressure will _?

B. First increase then decrease

Why is the atmosphere important for life on Earth?

B. It protects and helps life survive

A. It provides food for living organisms

B. It protects and helps life survive

C. It generates heat for the planet

D. It produces water for all living beings

We may feel internal injury or altitude sickness at higher or lower altitudes than sea level because?

A. Our body adjusts to pressure changes slowly

B. Oxygen concentration increases with altitude

C. Humidity levels change drastically

D. Gravity becomes weaker at higher altitudes

Everyday Science · Environment, Weather & Ecology · page 7 of 8

Atmosphere MCQs with Answers

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Atmosphere MCQs (61–70)

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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61.
As we climb up the mountain, the atmospheric pressure will _?
Correct Answer: D. Decrease
One-liner
As we climb up a mountain, atmospheric pressure decreases because the weight of the air column above us becomes less.
62.
Why is the atmosphere important for life on Earth?
Correct Answer: B. It protects and helps life survive
One-liner
The atmosphere is important for life on Earth because it protects and helps life survive by providing breathable air, shielding from harmful radiation, and regulating temperature.
63.
The blanket of air which surrounds the earth is called?
Correct Answer: A. Atmosphere
One-liner
The blanket of air surrounding the Earth is called the Atmosphere.
64.
We may feel internal injury or altitude sickness at higher or lower altitudes than sea level because?
Correct Answer: A. Our body adjusts to pressure changes slowly
One-liner
We feel altitude sickness because our body adjusts to pressure changes slowly, leading to reduced oxygen supply to tissues.
65.
Atmospheric pressure at sea level is _?
Correct Answer: A. 760 mm
One-liner
Atmospheric pressure at sea level is 760 mm of mercury (Hg).
66.
Which one of the following is not a primary pollutant?
Correct Answer: C. Sulfate (SO₄²⁻)
One-liner
Sulfate (SO₄²⁻) is not a primary pollutant; it is a secondary pollutant formed in the atmosphere through oxidation of sulfur dioxide.
67.
Past Paper MCQ
Meteorology is the study of _?
Correct Answer: A. Atmosphere
One-liner
Meteorology is the scientific study of the atmosphere and its phenomena, including weather and climate.
68.
The nitrogen gas can be fixed spontaneously by?
Correct Answer: D. All of these
One-liner
Nitrogen gas can be fixed spontaneously by lightning, certain bacteria, and the industrial Haber process — All of these are correct.
69.
The sky over the earth, in fact, looks ?
Correct Answer: B. Black
One-liner
The sky over the earth, in fact, looks black because space itself is dark, and the blue color we see is due to scattering of sunlight by the atmosphere.
70.
A place which does not have safe oxygen level is termed as:
Correct Answer: D. Confined Space
One-liner
A place which does not have a safe oxygen level is termed as a Confined Space.

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Atmosphere MCQs with Answers

Atmosphere MCQs (61–70)

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