111: Mixture of which one of the following pairs of gases is the cause of occurrence of most of the explosions in mines?
(a) Hydrogen and oxygen
(b) Oxygen and acetylene
(c) Methane and air
(d) Carbon dioxide and methane
112: With reference to the human body consider the following statements:
1. The production of somatotropin goes up when a person exercises
2. Men's testes produce progesterone
3. Women's adrenal glands secrete testosterone
4. Stress causes the adrenals to release very less amount of cortisol than usual
Which of these statements are correct?
(a) 1 2 3 4
(b) 1 2 3
(c) 2 3 4
(d) 1 and 4
113: The Ryotwari Settlement was introduced by the British in the
(a) Bengal Presidency
(b) Madras Presidency
(c) Bombay Presidency
(d) Madras and Bombay Presidencies
114: Which one of the following pair is not correctly matched?
City : River
(a) Berlin : Rhine
(b) London : Thames
(c) New York : Hudson
(d) Vienna : Danube
115: The purpose of the inclusion of Directive Principles of State Policy in the Indian Constitution is to establish :
(a) political democracy
(b) social democracy
(c) Gandhian democracy
(d) social and economic democracy