2071: With reference to the Constitution of India, which one of the following pairs is not correctly matched?
(a) Forests : Concurrent List
(b) Stock Exchanges : Concurrent List
(c) Post Office Saving Bank : Union List
(d) Public Health : State List
2072: Recently Uttar Pradesh and Madhya Pradesh governments signed a Memorandum of Understanding for the linking of two rivers as a link project. Which are these two rivers?
(a) Betwa and Chambal
(b) Betwa and Ken
(c) Chambal and Son
(d) Ken and Narmada
2073: The sun derives its energy from:
(a) Nuclear fission reactions.
(b) Nuclear fusion reactions.
(c) Oxidation of helium.
(d) Fission of noble metals.
2074: Which one among the following languages has largest number of speakers in the world?
(a) Bengali
(b) French
(c) Japanese
(d) Portuguese
2075: An astronaut weighing 100 kg fires a bullet weighing 1 kg with a gun of 10 kg at the speed of 50 metres/second. What will be the recoil velocity of the gun ?
(a) 5 cm/s
(b) 50 cm/s
(c) 0.5 cm/s
(d) 0.05 cm/s