1116: The evidence for the rotation of stars comes mainly from the
(a) Doppler effect
(b) Photoelectric effect
(c) Stark effect
(d) Zeeman effect
1117: In binary system, 1010 is equivalent to
(a) 8
(b) 9
(c) 10
(d) 11
1118: The Sultan of Delhi who is reputed to have built the biggest network of canals in India was
(a) Iltutmish
(b) Ghiyasuddin Tughlaq
(c) Feroz Shah Tughlaq
(d) Sikandar Lodi
1119: Itaipu Dam built on the River Parana is one of the largest dams in the world. Which of the following two countries have this as a joint project?
(a) Colombia and Paraguay
(b) Paraguay and Ecuador
(c) Brazil and Paraguay
(d) Brazil and Peru
1120: The philosophical systems of the Hindus were propounded and properly codified in the:
(a) Vedic age
(b) Maurya age
(c) Kanishka age
(d) Gupta age