2146: Consider the following statements with reference to the Periodic Table of chemical elements :
I. lonisation potential gradually decreases along a period.
II. In a group of elements, electron affinity decreases as the atomic weight increases.
III. In a given period, electronegativity decreases as the atomic number increases.
Which of these statement(s) is/are correct ?
(a) I only
(b) II only
(c) I and III
(d) II and III
2147: Assertion (A) :
Formic acid is a stronger acid than acetic acid.
Reason (R):
Formic acid is an organic acid.
(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 a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
2148: Assertion (A):
During the time of Akbar, for every ten cavalrymen, the mansabdars had to maintain twenty horses.
Reason (R):
Horses had to be rested while on march and replacements were necessary in times of war.
(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 a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
2149: The Harappans did not know the use of
(a) Bronze
(b) Gold
(c) Iron
(d) Silver
2150: Which one of the following is not a drug/pharma company?
(a) Chevron
(b) Pfizer
(c) Nicholas Piramal
(d) Zydus Cadila