Which of the following organisms is useful in the preparation of Roquefort cheese?

In which of the following places is ethanol used as a fuel in vehicles?

The drug $Cyclosporin$ $A$,used in organ transplantation,is obtained from which of the following?

Assertion $A$: Cyclosporin-$A$ is used in organ transplantation of patients.
Reason $R$: It reduces the cholesterol level in the blood.
Which option is correct for Assertion $A$ and Reason $R$?

What is required for the production of antibiotics?

Which of the following scientists established penicillin as an effective antibiotic?
$(i)$ Ernst Chain
$(ii)$ Alexander Fleming
$(iii)$ Howard Florey
$(iv)$ Waksman