231: Arrange the following fertilisers according to the decreasing order of their nitrogen content:
I. Ammonium sulphate
II. Ammonium nitrate
III. Potassium nitrate
IV. Urea
(a) IV, II, III, I
(b) IV, II, I, III
(c) IV, III, II, I
(d) II, IV, III, I
232: The term "Imperial preference" was applied to the
(a) special privileges on British imports in India
(b) racial discrimination by the Britishers
(c) subordination of Indian interest to that of the British
(d) preference given to British political agents over Indian Princes
233: The technique used to transmit audio signals in television broadcasts is
(a) Amplitude Modulation
(b) Frequency Modulation
(c) Pulse Code Modulation
(d) Time Division Multiplexing
234: A and B start from the same point and in the same direction at 7 a.m. to walk around a rectangular field 400 m x 300 m. A and B walk at the rate of 3 km/hr and 2.5 km/hr respectively. How many times shall they cross each other if they continue to walk till 12 : 30 p.m?
(a) Not even once
(b) Once
(c) Twice
(d) Thrice
235: Which one of the following legislations does not deal with the protection of environment ?
(a) The Water (Cess) Act, 1977
(b) The Forest (Conservation) Act, 1980
(c) The Public Liability Insurance Act,1991
(d) The Port Laws Amendment Act, 1997