4151: What is the purpose of evolved Laser Interferometer Space Antenna (eLISA) project?
(a) To detect neutrinos
(b) To detect gravitational waves
(c) To detect the effectiveness of missile defence system
(d) To study the effect of solar flares on our communication systems
4152: Kalhana's Rajatarangini (twelfth century) contains
(a) A collection of stories preaching morals
(b) The history of the dynasties of Kashmir
(c) The history of early Muslim rule in India
(d) An account of the early Indian voyages
4153: The Ajanta Caves were built during the period of:
(a) Guptas
(b) Kushans
(c) Mauryas
(d) Chalukyas
4154: Who prepares topographical maps of India?
(a) Survey of India
(b) Ministry of Home Affairs
(c) Geological Survey of India
(d) Archaeological Survey of India
4155: The average age of a cricket team reduces by 2 when two senior players aged 32 and 30 are replaced by 2 youngsters of equal age. What is the age of these new players?
(a) 20
(b) 22
(c) 24
(d) 26