Skip to content

Reaction between two elements… (Class 10 Science 2025, Q5)

questionbuddy.in/q/cbse-10-science-2025-31-1-1-q5-reaction-between-elements-forms-compound

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

CBSE Class 10 Science 2025: question 5

Set in the CBSE Class 10 board exam of 2025, paper 31/1/1, section A, question 5, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q5 · 1 mark · MCQMetals and Non-metals

Reaction between two elements A and B, forms a compound C. A loses electrons and B gains electrons. Which one of the following properties will not be shown by compound C?

  1. (A)It has high melting point.
  2. (B)It is highly soluble in water.
  3. (C)It has weak electrostatic forces of attraction between its oppositely charged ions.
  4. (D)It conducts electricity in its molten state or aqueous solution.

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

What type of bond forms when electrons are transferred?

Hint 2

Recall the properties of ionic compounds and how strong their interionic forces are.

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. A loses electrons and B gains them, so C is an ionic compound.

  2. Ionic compounds have a high melting point, are soluble in water and conduct electricity when molten or in solution. These match (A), (B) and (D).

  3. The attraction between their ions is strong, not weak. So property (C) is not shown, and the answer is option (C).

    1 mark

Answer: Option (C)

Where the marks are

  • Chooses option (C) (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Metals and Non-metals, 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.