✓ Board-verified↻ asked 3×
Science · 2026 · 3 marks
CBSE 2026 · Region 5 · Set 1 · Q14
(a)Mention any one harmful effect of using plastic bags on the environment. Suggest better alternatives to the usage of plastic bags.(b)Paddy fields require a large amount of water. The pesticides and chemical fertilizers used are washed down into the soil or waterbodies. How do these chemicals reach our bodies ? What is this phenomenon known as ?
(a)
Mention any one harmful effect of using plastic bags on the environment. Suggest better alternatives to the usage of plastic bags.
(b)
Paddy fields require a large amount of water. The pesticides and chemical fertilizers used are washed down into the soil or waterbodies. How do these chemicals reach our bodies ? What is this phenomenon known as ?
Marking-scheme solution
(a)
Plastics being non - biodegradable persist in environment for a long time.
Alternative - Jute or cloth bag
(b)
This Phenomenon is biological magnification.
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CBSE Class 10 Science past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.