Microbes are used in:
$1.$ Primary treatment of sewage
$2.$ Secondary treatment of sewage
$3.$ Anaerobic sludge digester
$4.$ Production of bioactive molecules

$S -$ Statement: Cellulase is used in laundry to remove oily stains.
$R -$ Reason: Cyclosporin-$A$ is used to prevent blood clotting in blood vessels.

Which of the following statements is false?

Choose the correct combination:

Column-$I$	Column-$II$
$A$. Escherichia coli	$I$. Nif gene
$B$. Rhizobium melilotae	$II$. Digestive hydrocarbon of crude oil
$C$. Bacillus thuringiensis	$III$. Production of human insulin
$D$. Pseudomonas putida	$IV$. Biological control of fungal disease
	$V$. Biodecomposed insecticide

Which of the following statements is false?

Which of the following statements are associated with silage?
$(i)$ Prepared with the help of $Propionibacterium$ $sharmanii$.
$(ii)$ Used in the preparation of bread.
$(iii)$ It is a type of cattle feed.
$(iv)$ Used for the production of ethanol.
$(v)$ Produced by the fermentation of carbohydrates present in green plant tissues.