Question

Assertion: All naturally occurring α-aminoacids except glycine are optically active.

Reason: Most naturally occurring amino acids have L-configuration.

विकल्प

• Assertion and reason both are correct statements and reason explains the assertion.

• Both assertion and reason are wrong statements.

• Assertion is correct statement and reason is wrong statement.

• Assertion is wrong statement and reason is correct statement.

• Assertion and reason both are correct statements but reason does not explain assertion.

Answer 1

Assertion and reason both are correct statements but reason does not explain assertion.

Explanation:

Expect glycine, all other naturally occurring α-amino acids are optically active, since the α-carbon atom is asymmetric. These exist both in ‘D’ and ‘L’ forms. Most naturally occurring amino acids have L-configuration. L-Amino acids are represented by writing the –NH₂ group on left-hand side.