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A metal, M, displaces iron… (Class 10 Science 2025, Q2)

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ScienceCBSE Class 10 · Board exam 2025, set 31/5/1 · 1 mark · MCQ

CBSE Class 10 Science 2025: question 2

Set in the CBSE Class 10 board exam of 2025, paper 31/5/1, section A, question 2, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q2 · 1 mark · MCQMetals and Non-metals

A metal, M, displaces iron from aqueous solution of ferrous sulphate but fails to do so in case of aqueous solution of aluminium sulphate. The metal M is

  1. (A)Magnesium
  2. (B)Copper
  3. (C)Lead
  4. (D)Zinc

Source: official question paper from cbse.gov.in (PDF). See it in the full 2025 board paper, set 31/5/1.

Hints

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

Hint 1

A more reactive metal displaces a less reactive metal from its salt solution.

Hint 2

Find the metal that lies between Al and Fe in the reactivity series.

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. M displaces Fe, so M is more reactive than iron. M cannot displace Al, so M is less reactive than aluminium.

  2. In the reactivity series, . Magnesium is above Al, while copper and lead are below Fe, so M is zinc: option (D).

    1 mark

Answer: (D) Zinc

Where the marks are

  • Identifies zinc (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Metals and Non-metals, one at a time, marked against the answer key and marking points.Back to the full paper2025 board paper, set 31/5/1: 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.