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Class 4 Exam  >  Class 4 Tests  >  Social Science Olympiad Class 4  >  Earth and Environment (HOTs) - Class 4 MCQ

Earth and Environment (HOTs) - Class 4 MCQ


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5 Questions MCQ Test Social Science Olympiad Class 4 - Earth and Environment (HOTs)

Earth and Environment (HOTs) for Class 4 2025 is part of Social Science Olympiad Class 4 preparation. The Earth and Environment (HOTs) questions and answers have been prepared according to the Class 4 exam syllabus.The Earth and Environment (HOTs) MCQs are made for Class 4 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Earth and Environment (HOTs) below.
Solutions of Earth and Environment (HOTs) questions in English are available as part of our Social Science Olympiad Class 4 for Class 4 & Earth and Environment (HOTs) solutions in Hindi for Social Science Olympiad Class 4 course. Download more important topics, notes, lectures and mock test series for Class 4 Exam by signing up for free. Attempt Earth and Environment (HOTs) | 5 questions in 10 minutes | Mock test for Class 4 preparation | Free important questions MCQ to study Social Science Olympiad Class 4 for Class 4 Exam | Download free PDF with solutions
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 for Earth and Environment (HOTs) - 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 for Earth and Environment (HOTs) - 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 for Earth and Environment (HOTs) - 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 for Earth and Environment (HOTs) - 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 for Earth and Environment (HOTs) - 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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