Q.

Mark correct answer on the basis of following two statements.
Statement-1: Ketoses give seliwanoff’s test faster than aldose.
Statement-II : When heated, fructose (ketose sugar) is more rapidly dehydrated than glucose (aldose sugar).

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a

Both statements are false.

b

(I) is true (II) is false.

c

Both statements are true.

d

(II) is true (I) is false.

answer is A.

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Detailed Solution

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Seliwanoff’s test may be a chemical test which distinguishes between aldose and ketose sugars. If the sugar contains a group , it's a ketose. If a sugar contains an aldehyde radical , it's an aldose. This test relies on the principle that, when heated, ketoses are sooner dehydrated than aldoses.

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Mark correct answer on the basis of following two statements.Statement-1: Ketoses give seliwanoff’s test faster than aldose.Statement-II : When heated, fructose (ketose sugar) is more rapidly dehydrated than glucose (aldose sugar).