Skip to content

Consider the following… (Class 10 Science 2025, Q4)

questionbuddy.in/q/cbse-10-science-2025-31-1-1-q4-consider-reactions-dilute-hydrochloric-acid

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

CBSE Class 10 Science 2025: question 4

Set in the CBSE Class 10 board exam of 2025, paper 31/1/1, section A, question 4, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q4 · 1 mark · MCQAcids, Bases and Salts

Consider the following reactions:
(i) Dilute hydrochloric acid reacts with sodium hydroxide.
(ii) Magnesium oxide reacts with dilute hydrochloric acid.
(iii) Carbon dioxide reacts with sodium hydroxide.
It is found that in each case:

  1. (A)Salt and water is formed.
  2. (B)Neutral salts are formed.
  3. (C)Hydrogen gas is formed.
  4. (D)Acidic salts are formed.

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

Hints

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

Hint 1

Write the products of each reaction.

Hint 2

Look for the product that appears in all three reactions.

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. (i)

  2. (ii)

  3. (iii)

  4. Every reaction gives a salt and water, so the answer is option (A). Na₂CO₃ is basic, not neutral, so (B) is wrong.

    1 mark

Answer: Salt and water is formed, option (A)

Where the marks are

  • Chooses option (A) (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 paper2025 board paper, set 31/1/1: 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.