1626: Water is filled in a container in such a manner that its volume doubles after every five minutes. If takes 30 minutes for the container to be full, in how much time will it be one-fourth full ?
(a) 7 minutes and 30 seconds
(b) 10 minutes
(c) 20 minutes
(d) 25 minutes
1627: Which one of the following is the correct decreasing sequence in terms of the value (in rupees) of the minerals produced in India in the year 2002-03?
(a) Metallic minerals - Fuel minerals - Non-metallic minerals
(b) Fuel minerals - Metallic minerals - Non-metallic minerals
(c) Metallic minerals - Non-metallic minerals - Fuel minerals
(d) Fuel minerals - Non-metallic minerals - Metallic minerals
1628: Which one of the following pairs is not correctly matched?
(a) Pitt's India Act : Warren Hastings
(b) Doctrine of Lapse : Dalhousie
(c) Vernacular Press Act : Curzon
(d) Ilbert Bill : Ripon
1629: Which of the following are not necessarily the consequences of the proclamation of the President's rule in a State?
1. Dissolution of the State Legislative Assembly
2. Removal of the Council of Ministers in the State
3. Dissolution of the local bodies
Select the correct answer using the code given below:
(a) 1 and 2 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
1630: A box contains 20 balls of which 8 are green, 7 are white and 5 are red. What is the minimum number of balls to be picked up without replacement to make sure that at least one ball of each colour is drawn?
(a) 11
(b) 13
(c) 14
(d) 16