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Study the following table and… (Class 10 Science 2026, Q20)

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ScienceCBSE Class 10 · Board exam 2026, set 31/5/1 · 1 mark · MCQ

CBSE Class 10 Science 2026: question 20

Set in the CBSE Class 10 board exam of 2026, paper 31/5/1, section B, question 20, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q20 · 1 mark · MCQCompetency-basedAcids, Bases and Salts

Study the following table and select the correct option :

SaltAcid usedBase usedNature of Salt
(A) NaClHClNaOHBasic
(B) NaCOHCONaOHNeutral
(C) NaSOHSONaOHAcidic
(D) CHCOONaCHCOOHNaOHBasic
  1. (A)NaCl, HCl, NaOH, Basic
  2. (B)NaCO, HCO, NaOH, Neutral
  3. (C)NaSO, HSO, NaOH, Acidic
  4. (D)CHCOONa, CHCOOH, NaOH, Basic

Source: official question paper from cbse.gov.in (PDF). See it in the full 2026 board paper, set 31/5/1.

Hints

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

Hint 1

Decide whether each acid and base is strong or weak.

Hint 2

A salt of a strong base and a weak acid has pH above 7.

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. CH₃COONa comes from a weak acid (CH₃COOH) and a strong base (NaOH), so the salt is basic. Row (D) is correct.

    1 mark

  2. The other rows are wrong: NaCl is neutral, Na₂CO₃ is basic and Na₂SO₄ is neutral.

Answer: (D)

Where the marks are

  • Weak acid + strong base gives a basic salt (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 paper2026 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.