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CBSE Class 4  >  Class 4 Test  >  Social Science Olympiad   >  Earth and Environment (HOTs) - Class 4 MCQ

Earth and Environment (HOTs) - Free MCQ Test with solutions for Class 4


MCQ Practice Test & Solutions: Earth and Environment (HOTs) (5 Questions)

You can prepare effectively for Class 4 Social Science Olympiad Class 4 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Earth and Environment (HOTs)". These 5 questions have been designed by the experts with the latest curriculum of Class 4 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 10 minutes
  • - Number of Questions: 5

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Earth and Environment (HOTs) - Question 1
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Refer to the given classification chart and select the option that correctly identifies X, Y and Z.

Detailed Solution: Question 1

• Smoke from vehicles contaminates the air → Air pollution (X).
• Untreated sewage pollutes rivers and lakes → Water pollution (Y).
• Decaying trash on land damages soil and habitats → Land pollution (Z).

Earth and Environment (HOTs) - Question 2
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Read the given statements and select the option that identifies the correct one(s).
(i) Global warming happens because greenhouse gases trap heat in the atmosphere.
(ii) Acid rain forms when sulfur dioxide mixes with rainwater.
(iii) Recycling cans increases the amount of waste in landfills.
(iv) Pollution can harm both animals and plants.

Detailed Solution: Question 2

• (i) True — greenhouse gases like CO₂ trap solar heat.
• (ii) True — SO₂ and NOₓ react with water to form acid rain.
• (iii) False — recycling reduces landfill waste.
• (iv) True — pollutants damage ecosystems and living organisms.

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Earth and Environment (HOTs) - Question 3
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Refer to the given classification chart and select the option that correctly identifies X, Y and Z.

Detailed Solution: Question 3

• Banana peels rot naturally → Biodegradable (X).
• Plastic bottles do not decompose → Non-biodegradable (Y).
• Paper sheets break down over time → Biodegradable (Z).

Earth and Environment (HOTs) - Question 4
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Which gases are primarily responsible for acid rain?

Detailed Solution: Question 4

Sulfur dioxide (SO₂) and nitrogen oxides (NOₓ) from burning fossil fuels dissolve in atmospheric moisture to form sulfuric and nitric acids, falling as acid rain.

Earth and Environment (HOTs) - Question 5
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Which of the following actions does not help prevent environmental pollution?

Detailed Solution: Question 5

Burning organic and other waste releases harmful smoke and particulates into the air, increasing air pollution rather than preventing it.

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About this Class 4 Practice Test

This test contains 5 MCQs on Earth and Environment (HOTs) with detailed solutions for each question. It is part of the Social Science Olympiad Class 4 course on EduRev, designed to align with the current Class 4 syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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If you found this Earth and Environment (HOTs) MCQ Test helpful, you can further enhance your Class 4 preparation with in-depth courses on EduRev, for all the subjects and topics available in Social Science Olympiad Class 4 course. The course offers:
  • Video Lectures: covering all the topics of Social Science Olympiad Class 4
  • Notes for Revision: offering revision notes, important questions, summaries, flashcards, cheatsheets & more for Class 4 preparation
  • MCQ Test: variety of questions as per the pattern of Class 4 exam
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