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"The ocean waters… (Class 10 Social Science 2024, Q22b)

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Social ScienceCBSE Class 10 · Board exam 2024, set 32/5/1 · 2 marks · Very short answer

CBSE Class 10 Social Science 2024: question 22(b)

Set in the CBSE Class 10 board exam of 2024, paper 32/5/1, section B, question 22(b), for 2 marks. Try it first; the hints and our step-by-step solution are below.

Q22(b) · 2 marks · Very short answerMinerals and Energy Resources

"The ocean waters contain vast quantities of minerals." Explain the statement with example.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2024 board paper, set 32/5/1.

Hints

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

Hint 1

Are the dissolved minerals concentrated or spread out?

Hint 2

Name minerals extracted commercially from the sea and from the sea bed.

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. Most minerals in ocean water are too widely diffused to be of economic significance.

    1 mark

  2. Common salt, magnesium and bromine are largely obtained from ocean water. The ocean beds are also rich in manganese nodules.

    1 mark

Answer: Ocean water holds many dissolved minerals; common salt, magnesium and bromine are extracted, and the sea bed has manganese nodules.

Where the marks are

  • Most minerals widely diffused, hence of little economic use (1 mark)
  • Examples: salt, magnesium, bromine, manganese nodules (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 32/5/1: 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.