JEE Main 2023 — S Block Elements Question with Solution
From: JEE Main 2023 (Online) 1st February Evening Shift
Question
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Gypsum is used for making fireproof wall boards.
Reason (R) : Gypsum is unstable at high temperatures.
In the light of the above statements, choose the correct answer from the options given below :
Choose an option
Show full solutionCorrect option: A
Step-by-step explanation
"Both (A) and (R) are correct but (R) is not the correct explanation of (A)" is the correct answer
Gypsum is indeed used for making fireproof wall boards, but the reason given in (R) that gypsum is unstable at high temperatures is not the correct explanation for why it is used for this purpose. Instead, gypsum is fire-resistant because it does not support combustion and does not emit toxic fumes when exposed to fire.
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