201: If 15 pumps of equal capacity can fill a tank in 7 days, then how many extra pumps will be required to fill the tank in 5 days?
(a) 6
(b) 7
(c) 14
(d) 21
202: When a CD (Compact Disc used in audio and video systems) is seen in sunlight, rainbow like colours are seen. This can be explained on the basis of the phenomenon of
(a) reflection and diffraction
(b) reflection and transmission
(c) diffraction and transmission
(d) refraction, diffraction and transmission
203: The next number in the series 0, 7, 26, 63 is:
(a) 124
(b) 178
(c) 195
(d) 255
204: Which two countries follow China and India in the decreasing order of their populations ?
(a) Brazil and USA
(b) Canada and Malaysia
(c) USA and Indonesia
(d) Russia and Nigeria
205: What is the likely impact of decrease of population on economy?
(a) Increase in per capita income
(b) Decrease in per capita income
(c) Increase in investment
(d) Decrease in savings