2116: The human immuno deficiency virus (HIV) is a living entity because it can
(a) Excrete in human serum
(b) Disturb host cell respiration
(c) Undergo auto-reproduction
(d) Move from one cell to another
2117: For which one of the following snakes is the diet mainly composed of other snakes?
(a) Rattlesnake
(b) King cobra
(c) Krait
(d) Russell's viper
2118: India's external debt increased from US $98,158 million as at the end of March 2000 to US $100,225 million as at the end of March 2001 due to increase in
(a) multilateral and bilateral debt
(b) rupee debt
(c) commercial borrowings and NRI deposits
(d) borrowing from International Monetary Fund
2119: What is the difference between asteroids and comets?
1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material.
2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury.
3. Comets show a perceptible glowing tail, while asteroids do not.
Which of the statements given above is / are correct?
(a) 1 and 2 only
(b) 1 and 3 only
(c) 3 only
(d) 1, 2 and 3
2120: Amar, Akbar and Anthony are friends, being looked after by a matron Farah. Amar weighs 50% more than Akbar and Anthony weighs 25% less than Amar. Farah weighs a third of the combined weight of the three boys. All four together weigh 232 kg. The correct arrangement of the persons in the ascending order of their weights is
(a) Anthony, Akbar, Farah, Amar
(b) Anthony, Akbar, Amar, Farah
(c) Akbar, Anthony, Amar, Farah
(d) Akbar, Anthony, Farah, Amar