446: If Amsterdam is X + 1, Montreal is X - 5, Tokyo is X + 9 and Lisbon is X, X denotes
(a) GMT
(b) The temperature as measured by the Kelvin scale to arrive at the temperature as measured by the Celsius s
(c) Base from which height and depth from the sea-level is measured
(d) The figure to be used for converting the Imperial System to the Metric System
447: Which one of the following is the best description of the term 'ecosystem'?
(a) A community of organisms interacting with one another.
(b) That part of the Earth which is inhabited by living organisms.
(c) A community of organisms together with the environment in which they live
(d) The flora and fauna of a geographical area
448: The tendency for increased litigation was visible after the introduction of the land settlement system of Lord Cornwallis in 1793. The reason for this is normally traced to which of the following provisions?
(a) Making Zamindar 's position stronger vis-a-vis the ryot
(b) Making East India Company an overlord of Zamindars
(c) Making judicial system more efficient
(d) None of the (a), (b) and (c) above
449: With reference to forced labour (Vishti) in India during the Gupta period, which one of the following statements is correct?
(a) It was considered a source of income for the State, a sort of tax paid by the people.
(b) It was totally absent in the Madhya Pradesh and Kathiawar regions of the Gupta Empire.
(c) The forced labourer was entitled to weekly wages.
(d) The eldest son of the labourer was sent as the forced labourer.
450: Each person's performance compared with all other persons is to be done to rank them subjectively. How many comparisons are needed in total, if there are 11 persons ?
(A) 55
(B) 66
(C) 54
(D) 45