4356: One consistent feature found in the history of southern India was the growth of small regional kingdoms rather than large empires because of
(a) the absence of minerals like iron
(b) too many divisions in the social structure
(c) the absence of vast areas of fertile land
(d) the scarcity of manpower
4357: A rectangular sheet of aluminium foil measuring 5 cm by 10 cm is rolled into a cylinder of height 10 cm. If the cost of painting the cylinder is Rs. 2/- per sq cm, then the cost of painting the surface of the cylinder will be
(a) Rs. 400/-
(b) Rs. 200/-
(c) Rs. 150/-
(d) Rs. 100/-
4358: In an examination, there are three subjects A, B and C. A student has to pass in each subject. 20% students failed in A, 22% students failed in B and 16% failed in C. The total number of students passing the whole examination lies between
(A) 42% and 84%
(B) 58% and 84%
(C) 58% and 78%
(D) 42% and 78%
4359: In a bisexual flower, if androecium and gynaecium mature at different times, the phenomenon is know as
(a) Dichogamy
(b) Herkogamy
(c) Heterogamy
(d) Monogamy
4360: Endoscopy, a technique used to explore the stomach or other inner parts of the body is based on the phenomenon of
(a) total internal reflection
(b) interference
(c) diffraction
(d) polarisation