Select the odd one out.

Read the following four statements $(A-D)$.
$(A)$ Colostrum is recommended for the new born because it is rich in antibodies.
$(B)$ Chikungunya is caused by a Gram-negative bacterium.
$(C)$ Tissue culture has proved useful in obtaining virus-free plants.
$(D)$ Beer is manufactured by distillation of fermented grape juice.
How many of the above statements are wrong?

Select the mismatched option from the following.

Which of the following statements is false?

Arrange the following in the decreasing order (most important first) of their importance,for the welfare of human society. Give reasons for your answer.
Biogas,Citric acid,Penicillin and Curd

Match the following columns:

Column-$I$	Column-$II$
$1.$ Silage	$a.$ Measure of water pollution level.
$2.$ Flocs	$b.$ Cattle feed.
$3.$ Biogas	$c.$ Bacteria associated with fungal filaments in water.
$4.$ $BOD$	$d.$ Anaerobic metabolism of organic waste.