Earth and Environment Practice Questions

Class 3 · EVS · 508 free MCQs with instant results and detailed explanations.

508

Total

159

Easy

256

Medium

Hard

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Topics in Earth and Environment

Pollution Basics 131

Soil 127

Air 127

Water Cycle 123

Sample Questions from Earth and Environment

Here are 10 sample questions. Start a quiz to get randomized questions with scoring.

Easy

What do we call the layer of gases surrounding the Earth?

A. Atmosphere

B. Lithosphere

C. Hydrosphere

D. Biosphere

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Correct Answer: A

The atmosphere is the layer of gases that envelops the Earth, essential for life.

Easy

Which of the following is NOT a component of air?

A. Oxygen

B. Nitrogen

C. Water

D. Sugar

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Correct Answer: D

Sugar is not a component of air; it is a solid substance, while air consists of gases.

Easy

Which activity can help clean the air?

A. Planting trees

B. Driving cars

C. Burning waste

D. Using plastic bags

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Correct Answer: A

Planting trees helps absorb carbon dioxide and releases oxygen, improving air quality.

Medium

Which of the following is NOT a component of air?

A. Oxygen

B. Carbon Dioxide

C. Dust

D. Water

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Correct Answer: D

Water is not a component of air; it exists in vapor form but is not considered a constituent component like oxygen or carbon dioxide.

Medium

What happens to the air pressure as you go higher up a mountain?

A. It increases

B. It decreases

C. It stays the same

D. It fluctuates

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Correct Answer: B

As you ascend a mountain, there are fewer air molecules above you, leading to a decrease in air pressure.

Medium

Which of the following can be a source of air pollution?

A. Washing clothes

B. Burning wood

C. Drinking water

D. Playing outside

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Correct Answer: B

Burning wood releases smoke and harmful gases, which contribute to air pollution.

Medium

What role do plants play in improving the air quality?

A. They produce carbon dioxide

B. They absorb oxygen

C. They help absorb carbon dioxide

D. They release heat

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Correct Answer: C

Plants help improve air quality by absorbing carbon dioxide and releasing oxygen through photosynthesis.

Hard

What happens to air pressure as you go higher above sea level?

A. It increases

B. It decreases

C. It stays the same

D. It fluctuates

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Correct Answer: B

As elevation increases, the amount of air above decreases, which lowers air pressure.

Hard

Which of these is NOT a way air is important for living things?

A. Helps in the process of photosynthesis

B. Provides nutrients directly

C. Enables breathing

D. Affects weather

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Correct Answer: B

Air provides oxygen for breathing and carbon dioxide for plants, but it does not provide nutrients directly.

Q10

Hard

What is the term for the layer of gases surrounding the Earth?

A. Geosphere

B. Hydrosphere

C. Atmosphere

D. Biosphere

Show Answer & Explanation

Correct Answer: C

The atmosphere is the layer of gases that surrounds the Earth, essential for life and weather.

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Earth and Environment — Class 3 EVS Practice Questions Online

This page contains 508 practice MCQs for the chapter Earth and Environment in Class 3 EVS. The questions are organized by difficulty — 159 easy, 256 medium, 93 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 4 topics, giving you comprehensive coverage of the entire chapter.