The first antibiotic isolated was:

For the commercial and industrial production of Citric Acid, which of the following microbes is used?

$A$ brewery subjects about $1$ tonne of purified jaggery to fermentation under ideal conditions. If it has produced $0.3$ tonne of alcohol, what quantity of $CO_2$ has it expelled into the atmosphere (in $tonne$)?

Given below are some antibiotics and their microbial source. Match the correct pairs.

$1$. Chloromycetin	$a$. Streptomyces griseus
$2$. Erythromycin	$b$. Penicillium chrysogenum
$3$. Penicillin	$c$. Streptomyces erythreus
$4$. Streptomycin	$d$. Streptomyces venezuelae

Which enzyme is useful for removing oily stains in laundry?

Streptokinase produced by the bacterium $Streptococcus$ is used for: