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B
P-4; Q-3; R-2; S-1
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C
P-4; Q-2; R-3; S-1
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D
P-1; Q-3; R-2; S-4
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Solution
The correct option is B P-4; Q-3; R-2; S-1 An alkanol has the functional group −OH attached to a carbon atom. An alkanal has the functional group −CHO attached to a carbon atom. An alkanone has the functional group −O||C− in its hydrocarbon chain. An alkanoic acid has the functional group −COOH present at one end of the chain.