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Study the given… (Class 10 Social Science 2025, Q31b)

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Social ScienceCBSE Class 10 · Board exam 2025, set 32/5/1 · 5 marks · Long answer

CBSE Class 10 Social Science 2025: question 31(b)

Set in the CBSE Class 10 board exam of 2025, 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 answerCompetency-basedManufacturing Industries

Study the given flowchart and answer the question that follows:

Explain the steel manufacturing process on the bases of the above flowchart.

Figure in the paper: Flow chart in sequence: Transport of raw material to plant → Blast Furnace Melted → Pig Iron → Steel Making → Shaping Metal. See it in the official paper.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2025 board paper, set 32/5/1.

Hints

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

Hint 1

Follow the sequence in the flowchart.

Hint 2

Which raw materials go into the blast furnace?

Hint 3

What is pig iron, and what happens to it next?

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. Raw materials such as iron ore, coal and limestone are transported to the steel plant, for example iron ore from Odisha or Jharkhand.

    1 mark

  2. They are fed into a blast furnace and melted at high temperature, with coke as fuel.

    1 mark

  3. The molten iron obtained is pig iron, which is high in carbon and is not yet steel.

    1 mark

  4. In the steel-making furnace, pig iron is refined to remove impurities and its composition is adjusted to give different grades of steel.

    1 mark

  5. The steel is shaped by rolling, forging or casting into sheets, rods or beams, used in construction and automobiles.

    1 mark

Answer: Raw materials are transported, melted in the blast furnace into pig iron, refined into steel and then shaped.

Where the marks are

  • Transport of raw materials to the plant (1 mark)
  • Melting in the blast furnace (1 mark)
  • Pig iron produced (1 mark)
  • Steel making by refining (1 mark)
  • Shaping of the metal and its uses (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 paper2025 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.