Which of the following microorganisms is responsible for the production of citric acid?

Streptomycin is produced by which micro-organism?

Read the statement containing two blanks $A$ and $B$: The medicine used for patients of $A$ is obtained from an organism of the species $B$. Select the correct option to fill both blanks.

Which country uses ethanol as a fuel?

......... are produced without distillation.

Identify the mis-matched pair from the following list of microorganisms and their commercial products.