Vinegar is produced from sugars with the help of:

Choose the correct option regarding the production of industrial products by microbes.

The microbe $Pseudomonas$ $denitrificans$ produces Vitamin

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.

Which of the following is not an antibiotic?

The antibiotic chloromycetin is prepared from . . . . . . .