Reason (R): Because of the reaction keeps moving in the backward direction.
A. Both (A. and (R) are correct but (R) is not the correct explanation of(A).
B. Both (A) and (R) are correct and (R) is the correct explanation of(A).
C. (A) is correct but (R) is wrong.
D. (A) is wrong but (R) is correct.
Answer:B
Reason (R): Because of the reaction keeps moving in the backward direction.
A. Both (A. and (R) are correct but (R) is not the correct explanation of(A). B. Both (A) and (R) are correct and (R) is the correct explanation of(A). C. (A) is correct but (R) is wrong. D. (A) is wrong but (R) is correct.