Microbes in Production of Biogas MCQs and Answers

Are you looking for Microbes in Production of Biogas MCQs and Answers for medical entrance examinations? If yes, these are some most important multiple choice questions and answers on NCERT Class-12 Biology, Chapter-10 (Microbes in Human Welfare).

Here we composed these Microbes in Production of Biogas MCQs and Answers after reading the chapter on Microbes in Human Welfare from the NCERT book on Class 12 Biology. The questions are topics-wise and the students can relate the questions easily to the most important topics of this chapter.

Microbes in Production of Biogas MCQs and Answers

1. Which of the following gases is not included in biogas?

a) CH4

b) H2S

c) CO2

d) H2O

Answer: d

2. On which medium do certain bacteria grow to produce biogas?

a) Lignin

b) Cellulose

c) Chitin

d) Cheese

Answer: b

3. What do we collectively call the biogas producing bacteria?

a) Archaebacteria

b) Cyanobacteria

c) Eubacteria

d) Methanogens

Answer: d

4. On which of the following factors does the type of gas produced depend?

a) Substrate

b) Cofactors

c) Catalysts

d) Product

Answer: a

5. Which of the following gas is produced using dung of cattle?

a) Greenhouse gas

b) Nitrous gas

c) Gobar gas

d) Water-gas

Answer: c

6. What is the height of the concrete tank used in biogas plant?

a) 10-15 metres

b) 15-20 metres

c) 10-15 feet

d) 15-20 feet

Answer: c

7. Which of the following is not true for a biogas plant?

a) The floating cover is placed over slurry

b) Biogas plant does not have an outlet

c) The slurry is removed and may be used as a fertiliser

d) The concrete tank is 10-15 feet deep

Answer: b

8. What is the full form of IARI?

a) Indian Ayurveda research institute

b) Indian aeronautical research institute

c) Indian aerospace research institute

d) Indian agricultural research institute

Answer: d

Sewage treatment is a process of removing contaminants from wastewater, typically from household sewage. It includes physical, chemical, and biological processes to remove physical, chemical, and biological contaminants. Wastewater enters a sewage treatment plant through a sewer system.

The first step in sewage treatment is primary treatment, which consists of allowing the solid and liquid waste to settle and separating them. The solid waste, called sludge, is removed and treated separately. The remaining liquid waste, called effluent, then undergoes secondary treatment.

Secondary treatment removes dissolved and suspended biological matter. It is typically done using aerobic bacteria, which convert the waste into carbon dioxide, water, and other harmless by-products.

After secondary treatment, the effluent is then disinfected to kill any remaining bacteria. The final step in sewage treatment is tertiary treatment, which is used to remove any remaining contaminants, including dissolved minerals and pollutants.

Microbes play an important role in sewage treatment. They help break down the waste, which makes it easier to remove. They also help remove harmful toxins and chemicals from the water.

If you have any questions about microbes in sewage treatment, feel free to ask in the comments below.

FAQs on Microbes in Production of Biogas

Q1. What types of microbes are used in biogas production?

Answer: There are many different types of microbes that can be used for biogas production, but the most common are bacteria and archaea. These microbes are responsible for breaking down organic matter into simpler compounds that can be used by plants and other organisms to create energy.

Q2. How do microbes help to produce biogas?

Answer: Microbes play a critical role in biogas production by breaking down organic matter into simpler compounds. This process, known as anaerobic digestion, creates methane and carbon dioxide, which can then be used to power homes and businesses.

Q3. What are the benefits of using microbes for biogas production?

Answer: There are many benefits to using microbes for biogas production. Microbes are able to break down a wide variety of organic materials, making them an efficient and cost-effective way to produce energy. In addition, microbes produce very little pollution and can be used to power homes and businesses with renewable energy.

Categories: Biology Class-12

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