Skip to content

Explain any five ways… (Class 10 Social Science 2023, Q31b)

questionbuddy.in/q/cbse-10-social-science-2023-32-5-1-q31b-ways-reduce-industrial-pollution

Social ScienceCBSE Class 10 · Board exam 2023, set 32/5/1 · 5 marks · Long answer

CBSE Class 10 Social Science 2023: question 31(b)

Set in the CBSE Class 10 board exam of 2023, paper 32/5/1, 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 answerManufacturing Industries

Explain any five ways to reduce industrial pollution.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2023 board paper, set 32/5/1.

Hints

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

Hint 1

Consider water, air and noise pollution separately.

Hint 2

Think of treatment before discharge.

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. Reduce water use in processing by reusing and recycling it in two or more successive stages.

    1 mark

  2. Harvest rainwater to meet industrial water needs.

    1 mark

  3. Treat hot water and effluents before releasing them into rivers and ponds. Primary treatment is mechanical, secondary is biological and tertiary is chemical and physical.

    1 mark

  4. Fit smoke stacks with electrostatic precipitators, scrubbers and filters, and use oil or gas instead of coal to reduce air pollution.

    1 mark

  5. Regulate overdrawing of groundwater. Fit generators with silencers and redesign machinery for energy efficiency and lower noise.

    1 mark

Answer: Recycle water, harvest rain, treat effluents, fit air-pollution controls, and reduce noise and groundwater over-use.

Where the marks are

  • Recycling water (1 mark)
  • Rainwater harvesting (1 mark)
  • Effluent treatment (1 mark)
  • Air pollution control devices or cleaner fuel (1 mark)
  • Noise reduction or groundwater regulation (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Manufacturing Industries, one at a time, marked against the answer key and marking points.Back to the full paper2023 board paper, set 32/5/1: 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.