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Microbes in Human Welfare

Previous year questions with solutions · 2000 – 2026

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78Questions
33Papers covered
2.97%Weightage 2026▼ 59.9% vs last year
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Year-wise statistics questions · papers · average per paper · weightage
YearQuestionsPapersAvg / paperWeightage
2026321.52.97% ▼ 59.9% vs last year
20254147.41% ▲ 322.2% vs last year
20242211.75% ▲ 129.8% vs last year
2022120.50.76% ▼ 54.2% vs last year
20211111.67% ▼ 58.3% vs last year
20202124.00% ▼ 47% vs last year
20194147.55% ▲ 315.1% vs last year
20181111.82% ▼ 65.5% vs last year
20173135.26% ▲ 505.3% vs last year
2016120.50.87% ▼ 52.6% vs last year
20152211.83% ▲ 2.8% vs last year
20141111.79% ▼ 0.9% vs last year
20132211.80% ▼ 79.4% vs last year
2012924.58.74% ▼ 30.1% vs last year
2011122612.50% ▲ 125% vs last year
2010522.55.56% ▼ 22.2% vs last year
20094147.14% ▲ 31% vs last year
20083135.45% ▼ 7.3% vs last year
20073135.88% ▲ 247.1% vs last year
20061111.69% ▲ 6.8% vs last year
20051111.59% ▼ 78.2% vs last year
20044147.27% ▲ 125.5% vs last year
20032123.23% ▲ 3.2% vs last year
20022123.12% ▼ 38.5% vs last year
20013135.08% ▲ 37.3% vs last year
20002123.70%

⚠ 4 of these questions are out of the current syllabus (marked on the question).

78 questions · newest paper first · page 3 of 3

Ques. 61AIPMT 2007

Probiotics are-

  1. Cancer inducing microbes
  2. New kind of food allergens
  3. Live microbial food supplement
  4. Safe antibiotics
Ques. 62AIPMT 2007

Which one of the following pairs is wrongly matched ?

  1. Methanogens – Gobar gas
  2. Yeast – Ethanol
  3. Streptomycetes – Antibiotic
  4. Coliforms – Vinegar
Ques. 63AIPMT 2007

Which one of the following statements is correct?

  1. Cyanobacteria such as Anabaena and Nostoc are important mobilizers of phosphates and potassium for plant nutrition in soil
  2. Both Azotobacter and Rhizobium fix atmospheric nitrogen in root nodules of plants
  3. At present it is not possible to grow maize without chemical fertilizers
  4. Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies
Out of syllabus
Ques. 64AIPMT 2006

Curing of tea leaves is brought about by the activity of

  1. fungi
  2. bacteria
  3. mycorrhiza
  4. viruses
Ques. 65AIPMT 2005

For retting of jute the fermenting microbe used is

  1. methanophilic bacteria
  2. butyric acid bacteria
  3. Helicobacter pylori
  4. Streptococcus lactis.
Ques. 66AIPMT 2004

A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is

  1. Tolypothrix
  2. Chlorella
  3. Nostoc
  4. Anabaena
Ques. 67AIPMT 2004

Dough kept overnight in warm weather becomes soft and spongy because of :-

  1. Cohesion
  2. Absorption of carbon dioxide from atmosphere
  3. Osmosis
  4. Fermentation
Ques. 68AIPMT 2004

Which one of the following pairs is not correctly matched ?

  1. Spirulina – Single cell protein
  2. Streptomyces – Antibiotic
  3. Rhizobium – Biofertilizer
  4. Serratia – Drug addiction
Ques. 69AIPMT 2004

A major component of gobar gas is

  1. ethane
  2. methane
  3. butane
  4. ammonia
Ques. 70AIPMT 2003

Which of the following plants are used as green manure in crop fields and in sandy soils ?

  1. Calotropis procera and Phyllanthus niruri
  2. Dichanthium annulatum and Azolla nilotica
  3. Saccharum munja and Lantana camara
  4. Crotalaria juncea and Alhagi camelorum
Ques. 71AIPMT 2003

During anaerobic digestion of organic waste, such as in producing biogas, which one of the following is left undegraded :-

  1. Lignin
  2. Cellulose
  3. Hemi-cellulose
  4. Lipids
Ques. 72AIPMT 2002

Which bacteria is utilized in Gobar gas plant ?

  1. Nitrifying bacteria
  2. Methanogens
  3. Ammonifying bacteria
  4. Denitrifying bacteria
Ques. 73AIPMT 2002

During the formation of bread it becomes porous due to release of CO2 by the action of : -

  1. Protozoans
  2. Bacteria
  3. Yeast
  4. Virus
Ques. 74AIPMT 2001

Which of the following is a true pair of biofertilizers?

  1. Nostoc and legume
  2. Rhizobium and grasses
  3. Salmonella and E. coli
  4. Azolla and BGA
Ques. 75AIPMT 2001

Which aquatic fern performs nitrogen fixation?

  1. Azolla
  2. Nostoc
  3. Salvia
  4. Salvinia
Out of syllabus
Ques. 76AIPMT 2001

What is B.O.D.?

  1. The total amount of O2 present in water
  2. The amount of O2 utilised by organisms in water
  3. The amount of O2 utilised by microorganisms for decomposition
  4. All of the above
Out of syllabus
Ques. 77AIPMT 2000

Which aquatic fern is used to increase the yield in paddy crop?

  1. Salvinia
  2. Isoetes
  3. Marsilea
  4. Azolla
Ques. 78AIPMT 2000

Which of the following is used to manufacture ethanol from starch?

  1. Saccharomyces
  2. Lactobacillus
  3. Azotobacter
  4. Penicillium