1486: Which of the following republics, besides Russia, are nuclear powers?
1. Ukraine
2. Georgia
3. Belarus
4. Kazakhstan
(a) 1, 2 and 4
(b) 2, 3 and 4
(c) 1, 2 and 3
(d) 1, 3 and 4
1487: The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason?
(a) Ice is a bad conductor of heat
(b) Since the surface of the lake is at the same temperature as the air, no heat is lost
(c) The density of water is maximum at 4 degree celcius
(d) None of the statements (a), (b) and (c) given above is correct.
1488: A boat which has a speed of 5 km/hr in still water crosses a river of width 1 km along the shortest possible path in 15 minutes. The velocity of the river water in km/hr is
(a) 1
(b) 3
(c) 4
(d)
1489: 50 men or 80 women can finish a job in , 50 days. A contractor deploys 40 men and 48 women for this work, but after every duration of 10 days, 5 men and 8 women are removed till the work is completed. The work is completed in:
(a) 45 days
(b) 50 days
(c) 54 days
(d) 62 days
1490: Consider the following statements :
The Ministerial Meeting of the WTO held in December 1999 was unsuccessful because it attempted to link trade with
I. labour related issues.
II. environment related issues.
III. terrorism related issues.
IV. debt-related issues.
Which of these statements are correct ?
(a) I, III and IV
(b) I and II
(c) II and III
(d) II and IV