2356: Two taps can fill a tank separately in 20 minutes and 30 minutes respectively. If both the taps are opened simultaneously, then the tank can be filled in:
(a) 50 minutes
(b) 15 minutes
(c) 12 minutes
(d) 10 minutes
2357: Consider the following chemicals :
1. Benzene
2. Carbon tetrachloride
3. Sodium Carbonate
4. Trichloroethylene
Which of the above is/are used as dry cleaning chemicals ?
(a) 1 Only
(b) 2 Only
(c) 1, 2 and 4 Only
(d) 1, 2, 3 and 4
2358: The Indian National Congress was founded in 1885 by
(a) Dadabhai Naoroji
(b) Henry Cotton
(c) Badruddin Tyabji
(d) A. O. Hume
2359: A man coming down on a lift leaves a ball from his hand. The ball will:
(a) Go up
(b) Fall down
(c) Remain stationary with respect to man
(d) Oscillate up and down
2360: The capital of the kingdom of Maharaja Ranjit Singh was
(a) Amritsar
(b) Patiala
(c) Lahore
(d) Kapurthala