Food preservative sodium benzoate is eliminated from the body as which of the following metabolite?

$A$ decapeptide (Mol. Wt. $796$) on complete hydrolysis gives glycine (Mol. Wt. $75$),alanine,and phenylalanine. Glycine contributes $47.0 \%$ to the total weight of the hydrolysed products. The number of glycine units present in the decapeptide is

The number of chiral carbons in chloramphenicol is

Oxidation of glucose is one of the most important reactions in a living cell. What is the number of $ATP$ molecules generated in cells from one molecule of glucose?

$A, B$ and $C$ are three biomolecules. The results of the tests performed on them are given below:

	$\text{Molisch's Test}$	$\text{Barfoed Test}$	$\text{Biuret Test}$
$A$	$\text{Positive}$	$\text{Negative}$	$\text{Negative}$
$B$	$\text{Positive}$	$\text{Positive}$	$\text{Negative}$
$C$	$\text{Negative}$	$\text{Negative}$	$\text{Positive}$

$A, B$ and $C$ are respectively:

The first viral disease detected in human beings was: