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Chemistry · 2025 · 1 mark
Haloalkanes and HaloarenesPhysical Properties of Haloalkanes and Haloarenes1 markUnderstandassertion reason
CBSE 2025 · Region 5 · Set 1 · Q16
Assertion (A): The boiling points of alkyl halides decrease in the order RI > RBr > RCl > RF. Reason (R): The van der Waals forces of attraction…
Assertion $\displaystyle (A)$ : The boiling points of alkyl halides decrease in the order $\displaystyle \mathrm{RI}>\mathrm{RBr}>\mathrm{RCl}>\mathrm{RF}$.
Reason (R) : The van der Waals forces of attraction decrease in the order RI > RBr > RCI > RF.
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 12 Chemistry past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.