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Science (086) — AI-generated practice question

AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.

Q1. [1] straightforward exam-ready
[mcq] Which of the following contains ONLY biodegradable items? (A) Grass, flowers and leather (B) Grass, wood and plastic (C) Fruit peels, paper and cotton cloth (D) Plastic bags, glass and DDT
  1. A Grass, flowers and leather
  2. B Grass, wood and plastic
  3. C Fruit peels, cake and lime juice
  4. D Plastic bags, glass and DDT
Generated by claude-sonnet-4-6 · 2026-06-26 00:59 · grounding rag
Model Answer

(C) Fruit peels, cake and lime juice

Fruit peels, cake, and lime juice are all derived from natural/biological sources and can be broken down by biological processes, making them biodegradable. Plastic, glass, and DDT are non-biodegradable.

Explanation

The textbook defines biodegradable substances as those broken down by biological processes (bacteria/saprophytes). Items of natural origin — food waste, plant matter, natural fibres — are biodegradable. Plastic, glass, and DDT resist biological breakdown and are non-biodegradable. Note: the correct option in the source passage is (c) Fruit-peels, cake and lime-juice, which matches Option C here.

Source: Chapter 13, Section 13.2.2 (Exercise Q.1)

Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.