1556: According to the World Development Report, low income economies are those for which the per capita GNP in 1994 was
(a) US $ 925 or less
(b) US $ 825 or less
(c) US $ 725 or less
(d) US $ 525 or less
1557: Optical fibre works on the principle of
(a) total internal reflection
(b) refraction
(c) scattering
(d) interference
1558: The only instance when the President of India exercised his power of veto related to
(a) the Hindu Code Bill
(b) the PEPSU Appropriation Bill
(c) the Indian Post Office (Amendments) Bill
(d) the Dowry Prohibition Bill
1559: The average height of 2 students in a class is 115 cm. Ten more students with an average height of 130 cm join them. Therefore, the average height of the group of students now becomes:
(a) 110 cm
(b) 120 cm
(c) 130 cm
(d) 140 cm
1560: Foot-and-Mouth disease in animals, a current epidemic in some parts of the world, is caused by
(a) Bacterium
(b) Fungus
(c) Protozoan
(d) Virus