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Class 4 Exam  >  Class 4 Tests  >  Science for Class 4  >  Test: Our Environment- 2 - Class 4 MCQ

Test: Our Environment- 2 - Class 4 MCQ


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10 Questions MCQ Test Science for Class 4 - Test: Our Environment- 2

Test: Our Environment- 2 for Class 4 2024 is part of Science for Class 4 preparation. The Test: Our Environment- 2 questions and answers have been prepared according to the Class 4 exam syllabus.The Test: Our Environment- 2 MCQs are made for Class 4 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Our Environment- 2 below.
Solutions of Test: Our Environment- 2 questions in English are available as part of our Science for Class 4 for Class 4 & Test: Our Environment- 2 solutions in Hindi for Science for Class 4 course. Download more important topics, notes, lectures and mock test series for Class 4 Exam by signing up for free. Attempt Test: Our Environment- 2 | 10 questions in 15 minutes | Mock test for Class 4 preparation | Free important questions MCQ to study Science for Class 4 for Class 4 Exam | Download free PDF with solutions
Test: Our Environment- 2 - Question 1
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What is the main cause of air pollution?

Detailed Solution for Test: Our Environment- 2 - Question 1
Air pollution primarily occurs due to the release of harmful substances like smoke from factories and vehicles into the atmosphere. These emissions contain pollutants like dust particles, fumes, and gases, which degrade air quality.
Test: Our Environment- 2 - Question 2
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What are the harmful rays from the sun that the ozone layer protects us from?

Detailed Solution for Test: Our Environment- 2 - Question 2
The ozone layer in the atmosphere absorbs ultraviolet rays from the sun, which are harmful to our skin and eyes and can cause diseases like cancer.
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Test: Our Environment- 2 - Question 3
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What is acid rain primarily caused by?

Detailed Solution for Test: Our Environment- 2 - Question 3
Acid rain is caused by the emission of sulfur and nitrogen compounds into the atmosphere. These compounds mix with water vapor to form acids, which then fall as rain, harming plants, buildings, and soil.
Test: Our Environment- 2 - Question 4
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Which of the following is a consequence of global warming?
Detailed Solution for Test: Our Environment- 2 - Question 4
Global warming leads to the melting of polar ice caps due to the rise in Earth's temperature. This melting contributes to the rise in sea levels.
Test: Our Environment- 2 - Question 5
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What does the 4R rule in waste management stand for?
Detailed Solution for Test: Our Environment- 2 - Question 5
The 4R rule stands for Refuse, Reduce, Reuse, and Recycle. It's a guideline to minimize waste generation and manage waste effectively.
Test: Our Environment- 2 - Question 6
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Which activity contributes to land pollution?
Detailed Solution for Test: Our Environment- 2 - Question 6
Dumping toxic chemicals near industrial areas contributes significantly to land pollution, contaminating the soil and potentially harming the ecosystem.
Test: Our Environment- 2 - Question 7
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What is the primary purpose of the Swachh Bharat Abhiyan in India?
Detailed Solution for Test: Our Environment- 2 - Question 7
Swachh Bharat Abhiyan (Clean India Mission) is a national program in India aimed at improving levels of cleanliness through proper waste management and ending open defecation.
Test: Our Environment- 2 - Question 8
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Which of the following is not a way to prevent pollution?
Detailed Solution for Test: Our Environment- 2 - Question 8
Burning leaves and trash contributes to air pollution. Preventive measures include using public transport, segregating waste, and planting trees, which help reduce pollution.
Test: Our Environment- 2 - Question 9
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What is a common method to reduce plastic waste in the environment?
Detailed Solution for Test: Our Environment- 2 - Question 9
Recycling plastic bottles helps reduce plastic waste by converting used plastic into new products, which minimizes the environmental impact of plastic pollution. Unlike burning or discarding plastic, recycling helps manage waste more sustainably.
Test: Our Environment- 2 - Question 10
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What is the role of the ozone layer in protecting the environment?
Detailed Solution for Test: Our Environment- 2 - Question 10
The ozone layer absorbs harmful ultraviolet rays from the sun, protecting living organisms from these damaging rays, which can cause health issues like skin cancer and cataracts.
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Important Questions for Our Environment- 2

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Our Environment- 2 MCQs with Answers

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