Chemical Kinetics - Result Question 48
####48. Which of the following option is correct?
(a) In living organisms, circulation of ${ }^{14} C$ from atmosphere is high so the carbon content is constant in organism
(b) Carbon dating can be used to find out the age of earth crust and rocks
(c) Radioactive absorption due to cosmic radiation is equal to the rate of radioactive decay, hence the carbons content remains constant in living organisms
(d) Carbon dating cannot be used to determine concentration of ${ }^{14} C$ in dead beings
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Answer:
Correct Answer: 48. acidic first or basic, second
Solution:
- Living plants maintain an equilibrium between the absorption of $C^{14}$ (produced due to cosmic radiation) and the rate of decay of $C^{14}$ present inside the plant. This gives a constant amount of $C^{14}$ per gram of carbon in a living plant.
