Fish is an important aquatic food which is rich in proteins. The act of capturing, preservation and utilization of fishes is called fish culture. Among the following statements choose the option which does not describe the benefit of fish culture?
A large number of fishes are raised in the small area
Economically important desired fishes are made available
There is more mortality in the younger stages of the fishes
Through selective hybridization, yield and quality of fishes are improved
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6Which of the following statement(s) is(are) correct regarding the root mean square speed (U????m????) and
average translational kinetic energy (???????????? ) of a molecule in a gas at equilibrium ?
(A) ???????????? at a given temperature does not depend on its molecular mass
(B) U????m???? is doubled when its temperature is increased four times
(C) ???????????? is doubled when its temperature is increased four times
(D) U????m???? is inversely proportional to the square root of its molecular massyut
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Answer- (c) There is more mortality in the younger stages of the fishes.
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