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Which of the following… (Class 10 Science SQP 2023-24, Q16)

questionbuddy.in/q/cbse-10-science-2023-24-sqp-q16-features-relates-biodegradable-substances

ScienceCBSE Class 10 · Sample paper, session 2023-24 · 1 mark · MCQ

CBSE Class 10 Science sample paper 2023-24: question 16

From the official CBSE sample question paper for 2023-24, section A, question 16, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q16 · 1 mark · MCQOur Environment

Which of the following features relates to biodegradable substances?

  1. (A)Broken down by biological processes
  2. (B)Remain inert
  3. (C)Persist in environment for long time
  4. (D)May harm the ecosystem

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2023-24.

Hints

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

Hint 1

What does 'bio' in biodegradable refer to?

Hint 2

The other three options describe plastics.

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. Biodegradable substances are broken down by microorganisms such as bacteria and fungi.

  2. Remaining inert, persisting for a long time and harming the ecosystem are features of non-biodegradable substances. So the answer is option (A).

    1 mark

Answer: Broken down by biological processes, option (A)

Where the marks are

  • Defines biodegradable as broken down by biological processes (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 2023-24: 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.