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Assertion (A) : The waste we… (Class 10 Science 2024, Q20)

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ScienceCBSE Class 10 · Board exam 2024, set 31/3/1 · 1 mark · Assertion-reason

CBSE Class 10 Science 2024: question 20

Set in the CBSE Class 10 board exam of 2024, paper 31/3/1, section A, question 20, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q20 · 1 mark · Assertion-reasonCompetency-basedOur Environment

Assertion (A) : The waste we generate daily may be biodegradable or non-biodegradable.
Reason (R) : The waste generated, if not disposed off properly may cause serious environmental problems.

  1. (A)Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. (B)Both (A) and (R) are true and (R) is not correct explanation of (A).
  3. (C)(A) is true, but (R) is false.
  4. (D)(A) is false, but (R) is true.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2024 board paper, set 31/3/1.

Hints

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

Hint 1

Check whether each statement is true on its own.

Hint 2

Does R tell us why waste is classified into two types?

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. Both statements are true. Waste is of two kinds, biodegradable and non-biodegradable, and improper disposal pollutes the environment.

  2. R is about the effects of improper disposal. It does not explain why waste falls into these two types. Option (B).

    1 mark

Answer: Option (B)

Where the marks are

  • Both true but R is not the explanation of A (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 paper2024 board paper, set 31/3/1: 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.