Free Microbes In Human Welfare (Daily Quiz: 15) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Who observed a mould growing in an unwashed culture plate while working on Staphylococcus bacterium?

(a) Alexander Fleming

(b) Ernst Chain

(c) Lamarck

(d) Florey

Question-2

Which of the following is a commercial blood cholesterol-lowering agent?

(a) Streptokinase

(b) Statin

(c) Lipases

(d) Cyclosporin-A

Question-3

Gobar gas contains mainly

(a) $CH_4$ only

(b) $CO_2 + H_2$

(c) $CO_2 + H_2$O

(d) $CH_4 + CO_2$

Question-4

Primary sludge is used for

(a) preparation of manure

(b) preparation of compost

(c) biogas production

(d) All of these

Question-5

Which one of the following statements is true?

(a) The greater the BOD of waste water, less is its polluting potential.

(b) The greater the BOD of waste water, more is its polluting potential.

(c) The lesser the BOD of waste water, more is its polluting potential.

(d) The lesser the BOD of waste water, less is its polluting potential.