Assertion: The two cyclic hemiacetal forms of glucose, α-form and β-form are called anomers. Reason: Anomers differ only in the configuration of the hydroxyl group at C-1.

Question

Assertion: The two cyclic hemiacetal forms of glucose, α-form and β-form are called anomers. Reason: Anomers differ only in the configuration of the hydroxyl group at C-1. (A) If both assertion and reason are true and reason is the correct explanation of assertion. (B) If both assertion and reason are true but reason is not the correct explanation of assertion. (C) If assertion is true but reason is false. (D) If both assertion and reason are false.

Tardigrade Admin · Accepted Answer

The two cyclic hemiacetal forms of glucose differ only in the configuration of hydroxyl group at

C - 1

, called anomeric carbon (the aldehyde carbon before cyclisation). Such isomers, i.e.,

α

&

β

form are called anomers.
Hence, both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

Q. Assertion : The two cyclic hemiacetal forms of glucose, α-form and β-form are called anomers. Reason : Anomers differ only in the configuration of the hydroxyl group at C−1.

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true but reason is not the correct explanation of assertion.

If assertion is true but reason is false.

If both assertion and reason are false.

Q. Assertion : The two cyclic hemiacetal forms of glucose, $α$ -form and $β$ -form are called anomers.
Reason : Anomers differ only in the configuration of the hydroxyl group at $C - 1$ .