Skip to content

Which of the following… (Class 10 Science SQP 2024-25, Q7)

questionbuddy.in/q/cbse-10-science-2024-25-sqp-q7-endothermic-reaction

ScienceCBSE Class 10 · Sample paper, session 2024-25 · 1 mark · MCQ

CBSE Class 10 Science sample paper 2024-25: question 7

From the official CBSE sample question paper for 2024-25, section A, question 7, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q7 · 1 mark · MCQChemical Reactions and Equations

Which of the following is an endothermic reaction?

  1. (A)Burning of candle.
  2. (B)Cooking of food.
  3. (C)Decomposition of Vegetable matter.
  4. (D)Reaction of Sodium with air

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2024-25.

Hints

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

Hint 1

An endothermic reaction absorbs heat.

Hint 2

Which of these processes needs heat to be supplied all the time?

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. Burning a candle, decomposition of vegetable matter and the reaction of sodium with air all release heat, so they are exothermic.

    ½ mark

  2. Cooking food needs a continuous supply of heat, so it absorbs energy. It is endothermic, option (B).

    ½ mark

Answer: Cooking of food; option (B)

Where the marks are

  • Identifies cooking of food as the heat-absorbing process (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Chemical Reactions and Equations, one at a time, marked against the answer key and marking points.Back to the full paperSample paper 2024-25: 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.