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"Non-convention… (Class 10 Social Science SQP 2023-24, Q30B)

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Social ScienceCBSE Class 10 · Sample paper, session 2023-24 · 5 marks · Long answer

CBSE Class 10 Social Science sample paper 2023-24: question 30(B)

From the official CBSE sample question paper for 2023-24, section D, question 30(B), for 5 marks. Try it first; the hints and our step-by-step solution are below.

Q30(B) · 5 marks · Long answerResources and Development

"Non-conventional resources are the best option to conserve the natural resources" Substantiate this statement with Examples.

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

Recall the difference between exhaustible and renewable resources.

Hint 2

How do solar and wind power affect pollution?

Hint 3

What problem comes from over-reliance on coal and oil?

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. Non-conventional sources are renewable and inexhaustible. Examples are solar, wind, tidal, biogas/bio-energy, geothermal energy, and also natural gas.

    1 mark

  2. They are clean and produce little secondary waste, so environmental impact is minimal.

    1 mark

  3. Growing dependence on coal, oil and gas depletes them. Rising prices and shortages threaten energy security and the economy, so renewable sources reduce this pressure.

    1 mark

  4. Natural gas has low carbon dioxide emissions and causes little air pollution, so it is the fuel for the present century.

    1 mark

  5. Renewable technologies reduce greenhouse gas emissions and global warming by replacing conventional sources, hence they best conserve resources.

    1 mark

Answer: Renewable, clean sources such as solar, wind and biogas conserve exhaustible fossil fuels and protect the environment.

Where the marks are

  • Meaning and examples of non-conventional sources (1 mark)
  • Clean with minimal waste (1 mark)
  • Reduces dependence on exhaustible fossil fuels and ensures energy security (1 mark)
  • Natural gas or another example with benefits (1 mark)
  • Reduces greenhouse gases and global warming (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Resources and Development, 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.