Discussion Forum

Chaaya

Asked: February 25, 2021In: Class 12 Biology

Find out the role of microbes in the following and discuss it with your teacher. (a) Single cell protein (SCP) (b) Soil

NCERT Solutions for Class 12 Biology Chapter 10 Microbes in Human Welfare Important Board Questions Microbes in Human Welfare NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 13

Chaaya

Asked: February 25, 2021In: Class 12 Biology

Three water samples namely river water, untreated sewage water and secondary effluent discharged from a sewage treatment plant were subjected to BOD test. The samples were labelled A, B and C; but the laboratory attendant did not note which was which. The BOD values of the three samples A, B and C were recorded as 20mg/L, 8mg/L and 400mg/L, respectively. Which sample of the water is most polluted? Can you assign the correct label to each assuming the river water is relatively clean?

NCERT Solutions for Class 12 Biology Chapter 10 Microbes in Human Welfare Important Board Questions Microbes in Human Welfare NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 11

Chaaya

Asked: February 25, 2021In: Class 12 Biology

Microbes can be used to decrease the use of chemical fertilisers and pesticides. Explain how this can be accomplished.

NCERT Solutions for Class 12 Biology Chapter 10 Microbes in Human Welfare Important Board Questions Microbes in Human Welfare NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 10

Chaaya

Asked: February 25, 2021In: Class 12 Biology

Do you think microbes can also be used as source of energy? If yes, how?

NCERT Solutions for Class 12 Biology Chapter 10 Microbes in Human Welfare Important Board Questions Microbes in Human Welfare NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 9

Chaaya

Asked: February 25, 2021In: Class 12 Biology

What is the key difference between primary and secondary sewage treatment?

NCERT Solutions for Class 12 Biology Chapter 10 Microbes in Human Welfare Important Board Questions Microbes in Human Welfare NCERT Books for Session 2022-2023 CBSE Board and UP Board Question : 8

Find out the role of microbes in the following and discuss it with your teacher. (a) Single cell protein (SCP) (b) Soil

Microbes can be used to decrease the use of chemical fertilisers and pesticides. Explain how this can be accomplished.

Do you think microbes can also be used as source of energy? If yes, how?

What is the key difference between primary and secondary sewage treatment?

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