Microbes In Human Welfare — DPP 2

20 NEET questions from Microbes In Human Welfare, with answers and explanations. Attempt it as a timed test to get scoring, accuracy breakdown and mistake tracking.

Attempt this test free 20 questions · 30 minutes · +80 marks
1
Methanogenic bacteria are NOT found in:
  1. A Rumen of cattle
  2. B Gobar gas plant
  3. C Bottom of water-logged paddy fields
  4. D Activated sludge
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Correct answer: D

2
Methanogenic bacteria is present in:
  1. A Anaerobic sludge
  2. B Rumen (a part of stomach) of cattle
  3. C Aerobic sludge
  4. D Both (1) and (3)
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Correct answer: D

3
Organic farming does NOT include:
  1. A Green manures
  2. B Chemical fertiliser
  3. C Croprotation
  4. D Compost and farmyard manures (Yakeen NEET Botany M-2)
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Correct answer: B

4
The solids which settle after primary treatment of sewage are called:
  1. A Primary sludge
  2. B Activated sludge
  3. C Flocs
  4. D Suspended solids
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Correct answer: A

5
Microbes produce different types of gaseous end products during growth and metabolism. The type of the gas produced depends upon the:
  1. A Microbes
  2. B Organic substrates utilised by microbes
  3. C End product
  4. D Both (1) and (2)
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Correct answer: D

6
Cheese are classified on the basis of:
  1. A Flavour
  2. B Taste
  3. C Texture
  4. D All of these
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Correct answer: D

7
In 1928, a scientist discovered the first effective antibiotic. The name of the scientist and antibiotic are:
  1. A Fleming-Streptomycin
  2. B Fleming-Penicillin
  3. C Waksman-Penicillin
  4. D Waksman-Streptomycin
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Correct answer: B

8
Broad spectrum antibiotics are the ones which attack:
  1. A Pathogens as well as hosts
  2. B A wide range of pathogens
  3. C On viruses only
  4. D Only host
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Correct answer: B

9
The oldest food item in which microbes were used is:
  1. A Curd
  2. B Cheese
  3. C Bread
  4. D Milk
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Correct answer: B

10
Which bacterium helps in the production of 'Swiss cheese'?
  1. A Propionibacterium sharmanii
  2. B Trichoderma polysporum
  3. C Saccharomyces cerevisiae
  4. D Aspergillus niger
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Correct answer: A

11
After secondary treatment, a part of activated sludge is passed back to aeration tank as inoculum while most of the part of activated sludge is passed to:
  1. A Anaerobic sludge digesters
  2. B Rivers and streams
  3. C Aeration tank
  4. D Settling tank
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Correct answer: A

12
Full potential of Penicillin as an effective antibiotic was established by:
  1. A Chain and Fleming
  2. B Chain and Florey
  3. C Chain, Florey and Fleming
  4. D Florey and Fleming
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Correct answer: B

13
Saccharomyces cerevisiae is commonly called as:
  1. A Baker's yeast
  2. B Brewer's yeast
  3. C Fermented yeast
  4. D Both (1) and (2)
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Correct answer: D

14
Streptokinase used as a 'clot buster' is obtained from:
  1. A Streptococcus
  2. B Staphylococcus
  3. C Lactobacillus
  4. D Saccharomyces
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Correct answer: A

15
The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorised as:
  1. A Chemosynthetic autotrophs
  2. B Heterotrophic bacteria
  3. C Cyanobacteria
  4. D Archaebacteria
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Correct answer: B

16
The dough kept overnight in warm weather becomes soft and spongy because of;
  1. A fermentation.
  2. B cohesion.
  3. C osmosis.
  4. D absorption of carbon dioxide from the atmosphere.
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Correct answer: A

17
In biogas plant, biowaste and slurry of dung are added to:
  1. A Floating cover
  2. B Gas holder
  3. C Digester
  4. D Outlet pipe
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Correct answer: C

18
Which of the following is/are produced by distillation?
  1. A Wine and Beer
  2. B Whisky and Rum
  3. C Brandy
  4. D Both (2) & (3)
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Correct answer: D

19
Cyclosporin-A is used for:
  1. A Dissolving blood clots
  2. B Lowering cholesterol level
  3. C Immunosuppression
  4. D Enhancing tenderness of meat
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Correct answer: C

20
Yeast is NOT used in the preparation of:
  1. A Dough
  2. B Curd
  3. C Ethyl alcohol
  4. D Cheese
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Correct answer: B

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