141.
Pasteurization of milk involve heating for
A
60 minutes at about $${90^ \circ }C$$
B
30 minutes at about $${50^ \circ }C$$
C
30 minutes at about $${65^ \circ }C$$
D
60 minutes at $${100^ \circ }C$$
Answer :
30 minutes at about $${65^ \circ }C$$
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142.
Which one of the following pesticides is banned now-a-days
A
DDT
B
Eldrin
C
Aldrin
D
Toxaphene
Answer :
DDT
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143.
"Hing" got from Ferula asafetida is
A
Resinous exudates of root
B
Fruits
C
Inflorescence
D
Leaves
Answer :
Resinous exudates of root
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144.
Which of the following bacterium is associated with production of bioinsecticide is
A
Bacillus subtilis
B
Bacillus thuringensis
C
Agrobacterium
D
Azotobactor
Answer :
Bacillus thuringensis
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145.
Hevea is a source of
A
Soft fibre
B
Strong fibre
C
Soft drink
D
Best rubber
Answer :
Best rubber
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146.
Saffron is obtained from
A
Styles and stigmas of Crocus
B
Stamens of Hibiscus
C
Petals of Hibiscus
D
Stamens of Crocus
Answer :
Styles and stigmas of Crocus
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147.
Wheat are placed in
A
Millets
B
Cereals
C
Pulses
D
Oil seeds
Answer :
Cereals
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148.
Green manuring increases crop yield by
A
5 - 10 %
B
80 - 90 %
C
10 - 20 %
D
30 - 50 %
Answer :
30 - 50 %
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149.
In tissue culture medium, the embryoids formed from pollen grains is due to
A
cellular totipotency
B
organogenesis
C
double fertilization
D
test - tube culture
Answer :
cellular totipotency
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150.
The main source of food and fooder is
A
Lichen
B
Cereals
C
Fungus
D
Cotton
Answer :
Cereals
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