Question: 82. Sugar ‘ X ‘
A. is found in honey.
B. is a keto sugar.
C. exists in \alpha and \beta – anomeric forms.
D. is laevorotatory.
‘ X ‘ is:
(1) D-Glucose
(2) D-Fructose
(3) Maltose
(4) Sucrose
Answer: Option (2)
Explanation:
D-Fructose is commonly found in honey along with glucose, so it satisfies statement A.
D-Fructose is a keto sugar because it contains a ketone functional group at the second carbon atom. Hence, statement B is correct.
In aqueous solution, D-fructose exists in cyclic forms and shows mutarotation,
thus having \alpha and \beta anomeric forms.
Therefore, statement C is satisfied.
D-Fructose is laevorotatory in nature although it belongs to the D-series.
Hence, statement D is also correct.
Thus, the sugar ‘X’ is D-Fructose,
and the correct answer is option (2).