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Metal oxides generally react… (Class 10 Science 2023, Q1)

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ScienceCBSE Class 10 · Board exam 2023, set 31/6/1 · 1 mark · MCQ

CBSE Class 10 Science 2023: question 1

Set in the CBSE Class 10 board exam of 2023, paper 31/6/1, section A, question 1, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q1 · 1 mark · MCQAcids, Bases and Salts

Metal oxides generally react with acids, but few oxides of metal also react with bases. Such metallic oxides are:

I. MgO
II. ZnO
III.
IV. CaO

  1. (A)I and II
  2. (B)II and III
  3. (C)III and IV
  4. (D)I and IV

Source: official question paper from cbse.gov.in (PDF). See it in the full 2023 board paper, set 31/6/1.

Hints

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

Hint 1

What name is given to oxides that react with both acids and bases?

Hint 2

Recall the two NCERT examples of amphoteric oxides.

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. Oxides that react with both acids and bases are called amphoteric oxides.

  2. and are amphoteric. and are basic only. Hence the answer is option (B).

    1 mark

Answer: II and III, option (B)

Where the marks are

  • Identifies ZnO and Al2O3 as amphoteric (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Acids, Bases and Salts, one at a time, marked against the answer key and marking points.Back to the full paper2023 board paper, set 31/6/1: 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.