Which of the following is an example of a non-distilled alcoholic beverage produced by yeast?

Ethanol is produced by fermenting of malted cereals by . . . . . . .

Match the following bacteria/fungi of Column $I$ with their commercial products of Column $II$.

Column $I$	Column $II$
$A$. Lactobacillus	$p$. Butyric acid
$B$. Aspergillus niger	$q$. Acetic acid
$C$. Acetobacter aceti	$r$. Lactic acid
$D$. Clostridium butylicum	$s$. Citric acid

Select the code for the correct answer from the options given below.

The large holes in Swiss cheese are developed due to the production of a large amount of . . . . . . gas.

Which of the following is used as an immunosuppressive agent?

The antibiotic penicillin was used to treat wounded $.....i....$ during $.....ii....$.