3591: 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
3592: A community of people called Manganiyars is well-known for their
(a) martial arts in North-East India
(b) musical tradition in North- West India
(c) classical vocal music in South India
(d) pietra dura tradition in Central India
3593: The Ryotwari Settlement was introduced by the British in the
(a) Bengal Presidency
(b) Madras Presidency
(c) Bombay Presidency
(d) Madras and Bombay Presidencies
3594: Even though an animal is fed with carbohydrate-rich diet, its blood sugar concentration tends to remain constant. This is on account of the fact that in the case of an animal
(a) hormones of pituitary glands control metabolic process
(b) hormones of pancreas cause such a condition
(c) blood sugar is readily absorbed by liver
(d) glucose undergoes autolysis
3595: In which organ of the human body are the lymphocyte cells formed?
(a) Liver
(b) Long bone
(c) Pancreas
(d) Spleen