Which one of the following is being utilized as a source of biodiesel in the Indian countryside?

Which of the following is an antibiotic?

What are organisms that cannot be seen with the naked eye called?

Fleming,Chain,and Florey were awarded the Nobel Prize for their work on antibiotics in ...........

$A$ process that uses micro-organisms to convert harmful industrial wastes into less toxic or non-toxic compounds is known as:

$S$ (Assertion): Alexander Fleming established the full potential of penicillin as an effective antibiotic.
$R$ (Reason): Alexander Fleming discovered penicillin.