Microbes In Human Welfare — DPP 1

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
Which of the following acts as biofertiliser?
  1. A Nostoc
  2. B Rhizobium
  3. C Mycorrhiza
  4. D All of these
Show answer

Correct answer: D

2
Which is incorrect about the Nucleopolyhedrovirus (NPV)?
  1. A These are species-specific.
  2. B These are broad-spectrum.
  3. C They have no negative impact on plants, mammals, bird, fish and non-target insects.
  4. D They aid in an overall IPM programme or when an ecologically sensitive area is being treated.
Show answer

Correct answer: B

3
Penicillin was the first antibiotic which was a chance discovery. Alexander Fleming at that time was working on:
  1. A Streptococci bacteria
  2. B Penicillium pneumoniae
  3. C Penicillium notatum
  4. D Staphylococci bacteria
Show answer

Correct answer: D

4
Treatment of waste water is done by the:
  1. A Autotrophic microbes
  2. B Heterotrophic microbes
  3. C Chemoautotrophic microbes
  4. D All of these
Show answer

Correct answer: B

5
In a sewage treatment plant all of the following processes belong to secondary treatment except:
  1. A Sedimentation
  2. B Addition of a part of activated sludge as inoculum
  3. C Anaerobic sludge digesters
  4. D Production of biogas
Show answer

Correct answer: A

6
Dung of cattle is predominantly rich in ________A_________ and is used to make ________B_________.
  1. A A - fungi, B - biogas
  2. B A - fungi, B - water gas
  3. C A - bacteria, B - biogas
  4. D A - bacteria, B - water gas
Show answer

Correct answer: C

7
Which of the following is NOT an advantage of mycorrhiza?
  1. A Nitrogen fixation.
  2. B Resistance to root borne pathogens.
  3. C Tolerance to salinity and drought.
  4. D Phosphorus absorption.
Show answer

Correct answer: A

8
Trichoderma is a:
  1. A Free-living bacteria
  2. B Free-living fungi
  3. C Symbiotic fungi
  4. D Both (1) and (3)
Show answer

Correct answer: B

9
Which is helpful in removing oily stains from the laundry?
  1. A Lipase
  2. B Amylase
  3. C Protease
  4. D Pectinase
Show answer

Correct answer: A

10
By which process floating debris and grit are removed in STPs respectively?
  1. A Filtration and Sedimentation
  2. B Filtration and Distillation
  3. C Sedimentation and Filtration
  4. D Only Filtration
Show answer

Correct answer: A

11
To control butterfly caterpillars we can use:
  1. A Ladybird beetle
  2. B Dragonflies
  3. C Nucleopolyhedrovinus
  4. D Bacillus thuringiensis
Show answer

Correct answer: D

12
The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals include the:
  1. A Halophiles
  2. B Thermoacidophiles
  3. C Methanogens
  4. D Eubacteria
Show answer

Correct answer: C

13
A major component of gobar gas is:
  1. A Ammonia
  2. B Methane
  3. C Ethane
  4. D Butane
Show answer

Correct answer: B

14
Mycorrhiza is a symbiotic association between:
  1. A Bacteria and fungi
  2. B Algae and fungi
  3. C Fungi and roots of higher plants
  4. D Blue green algae and roots of higher plants
Show answer

Correct answer: C

15
IPM (Integrated Pest Management) involves:
  1. A Tissue culture
  2. B Biological control
  3. C Biofertilisers
  4. D Pesticides
Show answer

Correct answer: B

16
Methanogens growing anaerobically on cellulosic material produce:
  1. A Methane only
  2. B Methane and hydrogen only
  3. C Methane and carbon dioxide only
  4. D Methane, carbon dioxide and hydrogen
Show answer

Correct answer: D

17
The common names of whooping cough, diphtheria and leprosy are respectively?
  1. A Gal ghotu, kali khansi and kusht rog
  2. B Kali khansi, kusht rog and gal ghotu
  3. C Kali khansi, gal ghotu and kusht rog
  4. D Kusht rog, kali khansi and gal ghotu
Show answer

Correct answer: C

18
Activated sludge should have the ability to settle quickly so that;
  1. A it can absorb colloidal organic matter.
  2. B it can be discarded and anaerobically digested.
  3. C a small part of the activated sludge is pumped back into the aeration tank to serve as the inoculum.
  4. D it can absorb pathogenic bacteria present in the settling tank.
Show answer

Correct answer: C

19
Full form of BOD is:
  1. A Biological Oxygen Deficit
  2. B Biological Organic Demand
  3. C Biochemical Oxygen Deficit
  4. D Biochemical Oxygen Demand
Show answer

Correct answer: D

20
'Bt' is available in sachets as dried __________.
  1. A capsules
  2. B seeds
  3. C spores
  4. D spray
Show answer

Correct answer: C

Attempt this as a timed test

Reading answers is not the same as sitting the paper. Attempt it timed and you get your score, per-question timing, and the mistakes tracked for revision.

Start free

More Microbes In Human Welfare tests

Microbes In Human Welfare — DPP 2 20 Q Microbes In Human Welfare — DPP 3 20 Q
All Microbes In Human Welfare tests →