3891: Assertion (A):
In the periodic table of chemical elements, electron affinity is always found to increase from top to bottom in a group.
Reason (R):
In a group, the atomic radial generally increase from top to bottom.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is NOT the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
3892: Who inscribed the name of Khalifa of Baghdad on his coins?
(a) Alauddin Khilji
(b) Iltutmish
(c) Qutub-ud-din
(d) Balban
3893: Consider the following statemtns:
1. Total land area of Earth is approximately 1475 lakh square kilometers.
2. Ratio of land area to water area of Earth is approximately 1 : 4.
3. Maximum percentage of Earth's water is in the Pacific Ocean.
Which of the following statements given above is/are correct?
(a) 1 only
(b) 3 only
(c) 2 and 3
(d) 1 and 3
3894: In a code language, SOLID is written as WPSLPIMFHA. What does the code word ATEXXQIBVO refer to ?
(a) EAGER
(b) WAFER
(c) WAGER
(d) WATER
3895: Which one of the following is a feature common to both the Indian Federation and the American Federation?
(a) A single citizenship
(b) Three lists in the Constitution
(c) Dual judiciary
(d) A federal Supreme Court to interpret the constitution