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Science · 2026 · 2 marks
CBSE 2026 · Region 3 · Set 2 · Q25
Comment on the following properties of ionic compounds and give reason in support of your answer: (i) Physical nature (ii) Melting and boiling points
Comment on the following properties of ionic compounds and give reason in support of your answer :
(i)
Physical nature
(ii)
Melting and boiling points
Marking-scheme solution
(i)
Hard and brittle solid because of strong force of attraction between positive and negative ions.
(ii)
High melting and boiling point because a considerable amount of energy is required to break the strong inter-ionic attraction.
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CBSE Class 10 Science past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.