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NEET Exam  >  NEET Tests  >  Biology Class 12  >  Test: Microbes in Production of Biogas (NCERT) - NEET MCQ

Test: Microbes in Production of Biogas (NCERT) - NEET MCQ


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10 Questions MCQ Test Biology Class 12 - Test: Microbes in Production of Biogas (NCERT)

Test: Microbes in Production of Biogas (NCERT) for NEET 2024 is part of Biology Class 12 preparation. The Test: Microbes in Production of Biogas (NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Microbes in Production of Biogas (NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Microbes in Production of Biogas (NCERT) below.
Solutions of Test: Microbes in Production of Biogas (NCERT) questions in English are available as part of our Biology Class 12 for NEET & Test: Microbes in Production of Biogas (NCERT) solutions in Hindi for Biology Class 12 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Microbes in Production of Biogas (NCERT) | 10 questions in 10 minutes | Mock test for NEET preparation | Free important questions MCQ to study Biology Class 12 for NEET Exam | Download free PDF with solutions
Test: Microbes in Production of Biogas (NCERT) - Question 1
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The given figure represents a typical biogas plant. Select the correct option for A, B and C respectively. 

Detailed Solution for Test: Microbes in Production of Biogas (NCERT) - Question 1

A - Sludge
B - Gas holder
C - dung+water

Test: Microbes in Production of Biogas (NCERT) - Question 2
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Process of biogas production is:

Detailed Solution for Test: Microbes in Production of Biogas (NCERT) - Question 2

Biogas is a methane-rich fuel gas produced by anaerobic breakdown or digestion of biomass with the help of methanogenic bacteria. Biogas is made up of methane (50-70%), carbon dioxide (30%-40%) with traces of nitrogen, hydrogen sulphide and hydrogen. 

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Test: Microbes in Production of Biogas (NCERT) - Question 3
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Which of the following bacteria is present in the rumen of cattle?

Detailed Solution for Test: Microbes in Production of Biogas (NCERT) - Question 3

Methanobacterium is found in the rumen (a part of the stomach) of cattle. A lot of cellulosic material is also available in the rumen. In rumen, these bacteria help in the breakdown of cellulose and play an important role in nutrition of cattle.

Test: Microbes in Production of Biogas (NCERT) - Question 4
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Match column I with column II and select the correct answer from the codes given below:
Detailed Solution for Test: Microbes in Production of Biogas (NCERT) - Question 4
  • Methanogens produce methane.
  • Fermentors are large vessels for growing microbes.
  • Organic waste in water increase BOD.
  • Biogas is methane rich fuel gas.
Test: Microbes in Production of Biogas (NCERT) - Question 5
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Which of the following statements is incorrect?
Detailed Solution for Test: Microbes in Production of Biogas (NCERT) - Question 5

Word antibiotic is a misnomer. Anti is a Greek word that means 'against', and bios means 'life', together they mean 'against life' (in the context of disease-causing organisms); whereas with reference to human beings, they are 'pro life' and not against. Flocs are masses of bacteria with interwoven fungal filaments which form mesh-like structures. Components of biogas are methane (50 70%); carbon dioxide (30-40%) and traces of hydrogen, nitrogen and H2S.

Test: Microbes in Production of Biogas (NCERT) - Question 6
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These bacteria grow anaerobically on cellulosic material, produce large amount of methane along with CO2 and H2 and are collectively called as methanogens. Examples of such bacteria are:
Detailed Solution for Test: Microbes in Production of Biogas (NCERT) - Question 6

Methanogens are microorganisms that produce methane as a metabolic by product in anoxic condition. They include Methanobacterium, Methanobrevibacter and Methanococcus.

Test: Microbes in Production of Biogas (NCERT) - Question 7
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Biogas generation is a three-stage anaerobic digestion of animal and other organic wastes. Study the following flow chart and select the correct option for stages I, II and Ill. 
Detailed Solution for Test: Microbes in Production of Biogas (NCERT) - Question 7

In stage - I, anaerobic microorganisms bring about enzymatic breakdown of complex organic compounds into simple soluble compounds or monomers.
In stage - II, monomers are converted into organic acids by fermentation causing microbes.
In stage - Ill, organic acids are acted upon by methanogenic bacteria to produce biogas.

Test: Microbes in Production of Biogas (NCERT) - Question 8
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Study the following statements and select the incorrect ones.
(i) Physical removal of large and small particles through filtration and sedimentation is called primary sewage treatment.
(ii) Secondary sewage treatment is mainly a mechanical process.
(iii) Activated sludge sediment in a sewage treatment plant is a rich source of aerobic bacteria.
(iv) Biogas, commonly called as gobar gas, is pure methane.
Detailed Solution for Test: Microbes in Production of Biogas (NCERT) - Question 8

Secondary treatment is also called biological treatment or microbial degradation. It is mainly a biological process. Biogas is a mixture of gases, containing predominantly methane (50-70%), CO2 (30-40%) and traces of hydrogen, H2S and nitrogen.

Test: Microbes in Production of Biogas (NCERT) - Question 9
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Biogas is produced by:
Detailed Solution for Test: Microbes in Production of Biogas (NCERT) - Question 9
  • Biogas is a methane rich fuel gas produced by anerobic breakdown or digestion of biomass with the help of methanogenic bacteria.
  • Biogas is a mixture of gases, containing predominantly methane (50-70%), CO2 (30-40%) and traces of hydrogen, H2S and nitrogen.
Test: Microbes in Production of Biogas (NCERT) - Question 10
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Match column I with column II and select the correct option from the codes given below.
Detailed Solution for Test: Microbes in Production of Biogas (NCERT) - Question 10

Strains are produced by Monascus purpureus. Dung is used to producing Biogas. Saccharomyces cerevisiae is used in the production of ethanol.  Cyclosporin A is obtained from Trichoderma polysporum.

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