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Which of the following… (Class 10 Science SQP 2025-26, Q7)

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ScienceCBSE Class 10 · Sample paper, session 2025-26 · 1 mark · MCQ

CBSE Class 10 Science sample paper 2025-26: question 7

From the official CBSE sample question paper for 2025-26, section A, question 7, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q7 · 1 mark · MCQOur Environment

Which of the following human activities has resulted in an increase of non-biodegradable substances?

  1. (A)Organic farming
  2. (B)Increase in tree plantation
  3. (C)Use of plastic as packaging material
  4. (D)Composting of kitchen waste

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2025-26.

Hints

Open one hint at a time and try again before the next.

Hint 1

Non-biodegradable means bacteria and fungi cannot break it down.

Hint 2

Which material in the options does not rot?

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. Plastic cannot be broken down by microorganisms, so it is non-biodegradable. Using it widely for packaging adds more non-biodegradable waste.

  2. Organic farming, planting trees and composting all reduce such waste or involve biodegradable materials. Answer: option (C).

    1 mark

Answer: Option (C): Use of plastic as packaging material

Where the marks are

  • Identifies plastic packaging as the source of non-biodegradable waste, option (C) (1 mark)

Revise the chapter

  • Chapter: Our Environment (notes, formulas, where marks are lost and every past question)
Practise this chapterBoard-style questions from Our Environment, one at a time, marked against the answer key and marking points.Back to the full paperSample paper 2025-26: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.