521: In the context of the Indian defense, what is 'Dhruv' ?
(a) Aircraft carrying warship
(b) Missile carrying submarine
(c) Advanced light helicopter
(d) Intercontinental ballistic missile
522: At a certain place, the Greenwich Mean Time is ahead by 12 hours. The place is located:
(a) 180°W of GMT
(b) 180°E of GMT
(c) 90°W of GMT
(d) 90°E of GMT
523: 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
524: "Lathyrism" is a crippling disease caused by:
(a) Tinned fish
(b) Chick pea and pulses
(c) Meat
(d) Adulterated oil
525: What is Bisphenol A (BPA) ?
(a) A medical test for detecting cancer
(b) A test for testing the use of drugs to improve performance by athletes
(c) A chemical used for the development of food-packaging materials
(d) A special type of alloy steel