Big holes in Swiss cheese are made by a:

1. a machine
2. a bacterium that produces methane gas
3. a bacterium producing a large amount of carbon dioxide
4. a fungus that releases a lot of gases during its metabolic activities.

Subtopic:  Microbes in Household Products |
 91%
From NCERT
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The vitamin whose content increases following the conversion of milk into curd by lactic acid bacteria is:

(1) Vitamin C

(2) Vitamin D

(3) Vitamin B12

(4) Vitamin E

Subtopic:  Microbes in Household Products |
 95%
From NCERT
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Which one of the following alcoholic drinks is produced without distillation?

(1) Wine

(2) Whisky

(3) Rum

(4) Brandy

Subtopic:  Chemistry of Fermented Beverages |
 88%
From NCERT
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Match the following list of bacteria and their commercially important products:

 

Bacterium

 

Product

(i)

Aspergullus niger

(a)

Lactic acid

(ii)

Acetobacter aceti

(b)

Butyric acid

(iii)

Clostridium Butylicum   

(c)

Acetic acid

(iv)   

Lactobacillus

(d)   

Citric Acid

Choose the correct match:

(1) (i) - b, (ii) - c, (iii) - d, (iv) - a

(2) (i) - b, (ii) - d, (iii) - c, (iv) - a

(3) (i) - d, (ii) - c, (iii) - b, (iv) - a

(4) (i) - d, (ii) - a, (iii) - c, (iv) - b

Subtopic:  Microbes in Household Products |
 91%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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The residue left after methane production from cattle dung is:

1. burnt

2. burried in land fills

3. used as manure

4. used in civil construction

Subtopic:  Microbes in Production of Biogas |
 89%
From NCERT
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BOD of waste water is estimated by measuring the amount of:

(1) total inorganic matter

(2) biodegradable organic matter

(3) oxygen evolution

(4) oxygen consumption.

Subtopic:  Microbes in Sewage Treatment |
 59%
From NCERT
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The free-living fungus Trichoderma can be used for:

1. killing insects

2. biological control of plant diseases

3. controlling butterfly caterpillars

4. producing antibiotics

Subtopic:  Microbes in Biocontrol Agent |
 77%
From NCERT
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The primary treatment of waste water involved the removal of:

(1) dissolved impurities

(2) stable substances

(3) toxic substances

(4) harmful bacteria.

Subtopic:  Microbes in Sewage Treatment |
 53%
From NCERT
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Identify the incrrectly matched pair:

1. Trichoderma harzianum -  Biocontrol

2. Aspergillus niger  - source of citric acid

3. Baculovirus - narrow spectrum species specific insecticides

4. Monascus purpureus - source of cholesterol synthesizing enzyme

Subtopic:  Chemicals, Enzymes & Other Bioactive Molecules |
 56%
From NCERT
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Identify the incorrectly matched pair 

1.

Baculoviruses

 Species specific, broad spectrum insecticides

2.

Trichoderma

Free living fungi common in root ecosystems

3.

Ladybird

Biocontrol of aphids

4.

Organic farming

Pests kept at manageable levels rather than completely eradicated

Subtopic:  Microbes in Biocontrol Agent |
 70%
From NCERT
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