186: An air bubble in water will act like a
(a) convex mirror
(b) convex lens
(c) concave mirror
(d) concave lens
187: Even though the Railways are the most pervasive mode of transport in India, it is the road transport which received the maximum impetus in most of the post-independence period. Which of the following are the reasons for this ?
I. Railways are cheap to operate but the associated capital costs are very high.
II. Given the geographic spread of the human settlements, it is unrealistic that the railways alone can serve the needs of transport.
III. The per unit (tonne/km) cost of transport is cheaper in road compared to rail transport.
IV. Given the indivisible nature of the Railways, it is not always convenient for the population to avail of it with the same ease as private cars, buses or two-wheelers.
Select the correct answer from the codes given below
Codes:
(a) I, II and III
(b) I, II and IV
(c) I, III and IV
(d) II, III and IV
188: Country known as the Sugar Bowl of he World is:
(a) Cuba
(b) India
(c) Burma
(d) Norway
189: In human body, which one of the following hormones regulates blood calcium and Phosphate?
(a) Thyroxine
(b) Growth hormone
(c) Parathyroid
(d) Glucagon
190: With reference to Indian Polity, which one of the following statements is correct?
(a) Planning Commission is accountable to Parliament
(b) President can make ordinance only when either of the two Houses of Parliament is not in session
(c) The minimum age prescribed for appointment as a Judge of the Supreme Court is 40 years
(d) National Development Council is constituted of Union Finance Minister and the Chief Ministers of all the States