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How are conventional… (Class 10 Social Science 2024, Q31B)

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Social ScienceCBSE Class 10 · Board exam 2024, set 32/1/1 · 5 marks · Long answer

CBSE Class 10 Social Science 2024: question 31(B)

Set in the CBSE Class 10 board exam of 2024, paper 32/1/1, section D, question 31(B), for 5 marks. Try it first; the hints and our step-by-step solution are below.

Q31(B) · 5 marks · Long answerMinerals and Energy Resources

How are conventional sources of energy different from non-conventional sources? Explain.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2024 board paper, set 32/1/1.

Hints

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

Hint 1

Compare them on renewability, cost and pollution.

Hint 2

Add one example of each type.

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. Conventional sources are exhaustible, while non-conventional sources are renewable.

    1 mark

  2. Conventional sources, mostly fossil fuels, take millions of years to form. Non-conventional sources come from the sun, wind and earth and are readily available.

    1 mark

  3. Conventional sources are relatively cheap but often pollute air and water. Non-conventional sources are costly initially but cheaper with time, and cause less damage to the environment.

    1 mark

  4. Non-conventional sources are sustainable while conventional ones are not.

    1 mark

  5. Examples: conventional are coal, petroleum, natural gas and firewood. Non-conventional are solar, wind, tidal and hydel power.

    1 mark

Answer: Conventional sources are exhaustible, polluting and unsustainable; non-conventional sources are renewable, cleaner and sustainable.

Where the marks are

  • Exhaustible versus renewable (1 mark)
  • Time of formation and origin (1 mark)
  • Cost and pollution (1 mark)
  • Sustainability (1 mark)
  • Examples of both (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Minerals and Energy Resources, one at a time, marked against the answer key and marking points.Back to the full paper2024 board paper, set 32/1/1: 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.