2591: Which of the following phenomena might have influenced the evolution of organisms?
1. Continental drift
2. Glacial cycles
Select the correct answer using the code given below.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
2592: A cubic metre of water at 0° C is solidified into ice. Density of ice is 0.96 of water at 0° C. Which of the following deductions are true?
I. Water expands when solidified.
II. Ice will float in water at 0° C with half its volume above the surface.
III. Density of all liquids are higher than its density when solidified.
(a) I only
(b) II only
(c) III only
(d) I and II
2593: Assertion (A) :
Panchayati Raj institutions were set up to decentralise planning to village level.
Reason (R) :
Village panchayats are in a better position to have a proper appreciation of their developmental needs.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
2594: Which of the following statements about the monsoon in India is incorrect?
(a) South-West monsoon are on-shore winds
(b) North-East monsoon are off-shore winds
(c) The monsoons retreat gradually
(d) The onset of the monsoon is from West Bengal only
2595: There are three drawers in a table. One contains two gold coins, another two silver coins, and the third, a silver coin and a gold coin. One of the drawers is pulled out and a coin is taken out. It turns out to be a silver coin. What is the probability of drawing a gold coin, if one of the other two drawers is pulled out next and one of the coins in it is drawn at random ?
(a) 37.5%
(b) 50%
(c) 62.5%
(d) 75%