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Identify the product… (Class 10 Science SQP 2023-24, Q1)

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ScienceCBSE Class 10 · Sample paper, session 2023-24 · 1 mark · MCQ

CBSE Class 10 Science sample paper 2023-24: question 1

From the official CBSE sample question paper for 2023-24, section A, question 1, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q1 · 1 mark · MCQChemical Reactions and Equations

Identify the product which represents the solid state in the above reaction.

  1. (A)Barium chloride
  2. (B)Barium sulphate
  3. (C)Sodium chloride
  4. (D)Sodium sulphate

Figure in the paper: A test tube containing sodium sulphate solution is being poured into a test tube containing barium chloride solution, held by hand. Labels: 'Test tube containing solution of sodium sulphate' (upper pouring tube) and 'Test tube containing solution of barium chloride' (lower tube). See it in the official paper.

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2023-24.

Hints

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

Hint 1

Write the balanced equation for the reaction between the two solutions.

Hint 2

Which product is insoluble in water and forms a white precipitate?

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. The reaction is a double displacement reaction:

  2. Barium sulphate does not dissolve in water. It separates out as a white precipitate, which is the solid state. Sodium chloride stays dissolved. So the answer is option (B) Barium sulphate.

    1 mark

Answer: Barium sulphate, option (B)

Where the marks are

  • Identifies barium sulphate as the insoluble precipitate (solid) (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 2023-24: 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.