ICSE Class 10 Pollution — Mock Test (2027)
Free online mock test for Pollution (ICSE Class 10 Biology) — 20 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.
What to expect: This mock test covers key concepts from the Pollution chapter — including application-based and competency-focused questions aligned with how ICSE actually sets the paper.
Tip: Attempt without notes first to identify gaps, then review explanations for any wrong answers. Retake after a few days for best retention.
Sample questions
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1.Which of the following substances is primarily responsible for the depletion of the ozone layer?
- A.Carbon dioxide (CO₂)
- B.Chlorofluorocarbons (CFCs)
- C.Methane (CH₄)
- D.Sulfur dioxide (SO₂)
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2.An example of non-biodegradable waste is
- A.Vegetable peels
- B.Sewage
- C.DDT
- D.Livestock waste
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3.Afforestation can help check the advancement of which environmental phenomenon?
- A.Floods
- B.Desert
- C.Global warming
- D.Acid rain
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4.What are the common sources of oil spills, and how do they primarily affect sea life?
- A.Sources: Ship accidents, offshore drilling, and pipeline leaks. Effects: Oil coats feathers and fur, reducing insulation and buoyancy; ingestion causes internal damage; disrupts food chains and habitats.
- B.Sources: Industrial waste and sewage discharge. Effects: Increases water salinity, leading to dehydration in marine animals; enhances coral growth.
- C.Sources: Plastic waste and fishing nets. Effects: Entangles marine life, causing physical injuries; releases microplastics that improve fish health.
- D.Sources: Agricultural runoff and deforestation. Effects: Causes algal blooms that deplete oxygen; has no direct impact on marine mammals or birds.
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5.Which chemical is primarily responsible for the depletion of the ozone layer?
- A.Carbon dioxide
- B.CFC (Chlorofluorocarbons)
- C.Methane
- D.Sulfur dioxide
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