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1921. The silvered surface of thermos flask prevents transfer of heat by
A. conduction
B. convection
C. radiation
D. All of these
Explanation:
1922. The characteristic feature of virus is that
A. it lacks chlorophyll.
B. it multiplies only on dead animals.
C. it is made of fats.
D. it multiplies only on hosts.
Explanation:
1923. Feeding of colostrum is important for young calves because
A. it is tasty.
B. it contains iron.
C. it contains antibodies.
D. it supplies growth proteins.
Explanation:
1924. The tree requiting minimum water for its growth is
A. Babul
B. Eucalyptus
C. Mango
D. Guava
Explanation:
1925. If the cerebellum of a pigeon were destroyed, the bird would not be able to
A. fly
B. breathe
C. digest food
D. oxidise food
Explanation:
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