3171: Which countries played in the Lawn Tennis Davis Cup Final in the year 2004?
(a) Switzerland and United States of America
(b) Australia and Argentina
(c) Spain and United States of America
(d) Sweden and Belgium
3172: Which of the following statements are correct about the deposits of methane hydrate?
1. Global warming might trigger the release of methane gas from these deposits.
2. Large deposits of methane hydrate are found in Arctic Tundra and under the seafloor.
3. Methane in atmosphere oxidizes to carbon dioxide after a decade or two.
Select the correct answer using the code given below.
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
3173: Assertion (A):
Anti-cyclonic conditions are formed in winter season when atmospheric pressure is high and air temperatures are low.
Reason (R):
Winter rainfall in Northern India causes development of anticyclonic conditions with low temperatures.
(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 a correct explanation of A
(c) A is true, but R is false
(d) A is fasle, but R is true
3174: 19 boys turn out for hockey. Of these 11 are wearing hockey shirts and 14 are wearing hockey pants. There are no boys without one or the other. The number of boys wearing full uniform is
(a) 3
(b) 8
(c) 5
(d) 6
3175: A small weight put on the pressure cooker increases the pressure of steam because:
(a) It is air tight
(b) Area of contact is very small
(c) Density of metal is very high
(d) Pressure builds up irrespective of the weight placed