Question :
A) collision between fast neutrons and nitrogen nuclei present in the atmosphere
B) action of ultraviolet light from the sun on atmospheric oxygen
C) action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
D) lightning discharge in atmosphere
Answer : A
Radiocarbon is produced in the atmosphere as a result of
A) collision between fast neutrons and nitrogen nuclei present in the atmosphere
B) action of ultraviolet light from the sun on atmospheric oxygen
C) action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
D) lightning discharge in atmosphere
Answer : A
Description :
Related Questions - 1
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The absorption of ink by blotting paper involves
A) viscosity of ink
B) capillary action phenomenon
C) diffusion of ink through the blotting
D) siphon action
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If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same
A) velocity
B) momentum
C) acceleration
D) kinetic energy
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It is more difficult to walk on a sandy road than on a concrete road because
A) sand is soft and concreter is hard
B) the friction between sand and feet is less than that between concrete and feet
C) the friction between sand and feet is more than that between concrete and feet
D) the sand is grainy but concrete is smooth