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Science (086) — AI-generated practice question

AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.

Q1. [1] straightforward initial-understanding
Which of the following correctly describes what happens when a base reacts with an acid? (A) A salt and hydrogen gas are produced. (B) A salt and water are produced. (C) Carbon dioxide and water are produced. (D) Only water is produced, with no salt formation.
  1. A A salt and hydrogen gas are produced.
  2. B A salt and water are produced.
  3. C Carbon dioxide and water are produced.
  4. D The base dissolves without forming any new products.
Generated by claude-sonnet-4-6 · 2026-06-26 01:02 · grounding rag
Model Answer

(B) A salt and water are produced.

When a base reacts with an acid, neutralisation occurs: Acid + Base → Salt + Water.

Explanation

This is the neutralisation reaction. The textbook (Chapter 2) clearly states: "Acids and bases neutralise each other to form corresponding salts and water." Option A describes acid reacting with a metal; Option C describes acid reacting with metal carbonate/hydrogencarbonate. Students must not confuse these three different types of reactions.

Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.