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Science · 2026 · 1 mark
CBSE 2026 · Region 5 · Set 1 · Q24
In the question two statements are given - one labelled as Assertion (A) and other labelled as Reason (R). Answer this question selecting the…
In the question two statements are given - one labelled as Assertion (A) and other labelled as Reason (R). Answer this question selecting the appropriate option from (A), (B), (C) and (D) given below :
Assertion (A) : Reaction of quick lime with water is an exothermic reaction.
Reason (R) : A large amount of heat is evolved on the reaction of quick lime and water.
Official answer
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
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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.