Which of the following microbes is $\text{NOT}$ involved in the preparation of household products?
$A.$ Aspergillus niger
$B.$ Lactobacillus
$C.$ Trichoderma polysporum
$D.$ Saccharomyces cerevisiae
$E.$ Propionibacterium sharmanii
Choose the correct answer from the options given below:

Methanogens are found in:

Which of the following is essential to avoid environmental pollution?

Match the following microbes with their respective products/applications:

$a$. $Saccharomyces$ $cerevisiae$	$i$. Production of immunosuppressive agent
$b$. $Monascus$ $purpureus$	$ii$. Ripening of Swiss cheese
$c$. $Trichoderma$ $polysporum$	$iii$. Industrial production of ethanol
$d$. $Propionibacterium$ $sharmanii$	$iv$. Blood cholesterol lowering agent

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 odd one out.