Select the option that is true regarding the following two statements labelled Assertion (A) and Reason (R).
Assertion (A): Fructose has the molecular formula C6H12O6 and on the basis of its reactions it was found to contain a ketonic functional group.
Reason (R): Fructose is an amino acid, which is chemically defined as an optically active polyhydroxy aldehyde or ketone, or a compound that yields such units on hydrolysis.
A is correct, but R is incorrect
Fructose is a monosaccharide with the molecular formula C6H12O6. Its reactions show that it contains a ketonic (C=O) group at carbon 2, so it is a ketohexose. Hence the Assertion is correct.
Carbohydrates are defined as optically active polyhydroxy aldehydes or ketones, or compounds that give such units on hydrolysis. This definition belongs to carbohydrates, not amino acids.
Fructose is a carbohydrate (a sugar), not an amino acid; amino acids contain an amino group and a carboxyl group. So the Reason is incorrect, and the correct evaluation is that A is correct, but R is incorrect.
Hence, A is correct, but R is incorrect.
Important Questions from Organic Chemistry
A carbon compound when heated in excess of concentrated sulphuric acid at 443K gives ethene. The compound is an________.
Plastic is not related to which of the following
The Peroxyacetyl Nitrate (PAN) is:
Which one of the following is the chemical name of heavy water ?
Which of the following alkanes contains primary ($1^\circ$), tertiary ($3^\circ$), and quaternary ($4^\circ$) carbons, but no secondary ($2^\circ$) carbons?
