Chloromycetin is produced by

An immunosuppressive agent used in organ-transplant patients is

Assertion: Vitamin $B_2$ is found in cereals,green vegetables,brewer's yeast,egg white,milk,and liver.
Reason: It can be commercially produced by some yeasts.

$Streptomyces \text{ } fradiae$ produces:

The dry fibrous residue left after the extraction of sugarcane juice is known as:

Beer is obtained from . . . . . . .