2011
Q51
NEET
MCQ
10 Mar 2026
The most common substrate used in distilleries
for the production of ethanol is :
A.
Ground gram
B.
Molasses
C.
Soyabean
D.
Corn meal
2011
Q52
NEET
MCQ
10 Mar 2026
Which one of the following is not a biofertilizer ?
A.
Agrobacterium
B.
Nostoc
C.
Rhizobium
D.
Mycorrhiza
2011
Q53
NEET
MCQ
10 Mar 2026
An organism used as a Biofertilizer for raising
soyabean crop is :
A.
Azotobacter
B.
Azospirillum
C.
Nostoc
D.
Rhizobium
2010
Q54
NEET
MCQ
10 Mar 2026
An example of endomycorrhiza is -
A.
Nostoc
B.
Rhizobium
C.
Glomus
D.
Agaricus
2010
Q55
NEET
MCQ
10 Mar 2026
The common nitrogen-fixer in paddy fields is –
A.
Azospirillum
B.
Frankia
C.
Rhizobium
D.
Oscillatoria
2010
Q56
NEET
MCQ
10 Mar 2026
A common biocontrol agent for the control of
plant diseases is –
A.
Bacillus thuringiensis
B.
Trichoderma
C.
Glomus
D.
Baculovirus
2010
Q57
NEET
MCQ
10 Mar 2026
Which one of the following not used in organic
farming ?
A.
Earthworm
B.
Oscillatoria
C.
Snail
D.
Glomus
2010
Q58
NEET
MCQ
10 Mar 2026
Select the correct statement from the following:
A.
Methanobacterium is an aerobic
bacterium found in rumen of cattle
B.
Activated sludge-sediment in
settlement tanks of sewage treatment plant
is a rich source of aerobic bacteria
C.
Biogas, commonly called gobar gas, is
pure methane
D.
Biogas is produced by the activity of
aerobic bacteria on animal waste
2009
Q59
NEET
MCQ
10 Mar 2026
Which one of the following pairs is wrongly
matched ?
A.
Detergents – lipase
B.
Fruit juice – pectinase
C.
Alcohol – nitrogenase
D.
Textile – amylase
2009
Q60
NEET
MCQ
10 Mar 2026
Which of the following is not used as a
biopesticide ?
A.
Bacillus thringiensis
B.
Trichoderma harzianum
C.
Nuclear Polyhedral Virus (NPV)
D.
Xanthomonas Campestris
2008
Q61
NEET
MCQ
10 Mar 2026
Trichoderma harzianum has proved a useful
microorganism for:
A.
biological control of soil-borne plant
pathogens
B.
reclamation of wastelands
C.
gene transfer in higher plants
D.
bioremediation of contaminated soils
2008
Q62
NEET
MCQ
10 Mar 2026
Nitrogen fixation in root nodules of Alnus is
brought about by:
A.
Bradyrhizobium
B.
Frankia
C.
Clostridium
D.
Azorhizobium
2008
Q63
NEET
MCQ
10 Mar 2026
Which one of the following proved effective for
biological control of nematodal disese in plants?
A.
Pisolithus tinctorius
B.
Paecilomyces lilacinus
C.
Pseudomonas cepacia
D.
Gliocladium virens
2007
Q64
NEET
MCQ
10 Mar 2026
Probiotics are-
A.
Cancer inducting microbes
B.
New kind of food allergens
C.
Live microbial food supplement
D.
Safe antibiotics
2007
Q65
NEET
MCQ
10 Mar 2026
Which one of the following pairs is wrongly
matched ?
A.
Methanogens – Gobar gas
B.
Yeast – Ethanol
C.
Streptomycetes – Antibiotic
D.
Coliforms – Vinegar
2004
Q66
NEET
MCQ
10 Mar 2026
A major component of gobar gas is
A.
ethane
B.
methane
C.
butane
D.
ammonia
2004
Q67
NEET
MCQ
10 Mar 2026
Which one of the following pairs is not correctly matched ?
A.
Spirulina – Single cell protein
B.
Streptomyces – Antibiotic
C.
Rhizobium – Biofertilizer
D.
Serratia – Drug addiction
2004
Q68
NEET
MCQ
10 Mar 2026
Dough kept overnight in warm weather
becomes soft and spongy because of :-
A.
Cohesion
B.
Absorption of carbon dioxide from
atmosphere
C.
Osmosis
D.
Fermentation
2004
Q69
NEET
MCQ
10 Mar 2026
The most thoroughly studied of the known
bacteria-plant interactions is the :-
A.
Nodulation of Sesbania stems by nitrogen
fixing bacteria
B.
Cyanobacterial symbiosis with some aquatic
ferns
C.
Plant growth stimulation by phosphate–
solubilising bacteria
D.
Gall formation on certain angiosperms by
Agrobacterium
2003
Q70
NEET
MCQ
10 Mar 2026
During anaerobic digestion of organic waste,
such as in producing biogas, which one of the
following is left undergraded : -
A.
Lignin
B.
Cellulose
C.
Hemi-cellulose
D.
Lipids
2003
Q71
NEET
MCQ
10 Mar 2026
Maximum application of animal cell culture
technology today is in the production of : -
A.
Interfereons
B.
Vaccines
C.
Edible proteins
D.
Insulin
2002
Q72
NEET
MCQ
10 Mar 2026
During the formation of bread it becomes
porous due to release of CO2 by the action of : -
A.
Protozoans
B.
Bacteria
C.
Yeast
D.
Virus
2002
Q73
NEET
MCQ
10 Mar 2026
Which bacteria is utilized in Gober gas plant ?
A.
Nitrifying bacteria
B.
Methanogens
C.
Ammonifying bacteria
D.
Denitrifying bacteria
2001
Q74
NEET
MCQ
10 Mar 2026
Which of the following is true pair of
biofertilizers ?
A.
Nostoc and legume
B.
Rhizobium and grasses
C.
Salmonella & E. Coli
D.
Azolla and BGA
2001
Q75
NEET
MCQ
10 Mar 2026
Spoilage of oil can be detected by which fatty
acid : -
A.
Linolenic acid
B.
Erusic acid
C.
Linoleic acid
D.
Oleic acid
2000
Q76
NEET
MCQ
10 Mar 2026
Which aquatic fern is used to increase the yield in
paddy crop ?
A.
Salvinia
B.
Isoetes
C.
Marsilea
D.
Azolla
2000
Q77
NEET
MCQ
10 Mar 2026
Which of the following is used to manufacture
ethanol from starch ?
A.
Saccharomyces
B.
Lactobacillus
C.
Azotobactor
D.
Penicilline