Question

(iii) Assertion (A): Nitrogen is the most abundant gas present in the atmosphere.
Reason (R): It is an essential constituent of body of living organisms.
(a) Both 'A' and 'R' are true and 'R' is the correct explanation of 'A'.
(b) Both 'A' and 'R' are true but 'R' is not the correct explanation of 'A'.
(c) 'A' is false but 'R' is true.
(d) 'A' is true but 'R' is false.​

Answer 1

Answer:

B

Explanation:

Nitrogen is most abundant and essential