3071: Amar, Akbar and Anthony are friends, being looked after by a matron Farah. Amar weighs 50% more than Akbar and Anthony weighs 25% less than Amar. Farah weighs a third of the combined weight of the three boys. All four together weigh 232 kg. The correct arrangement of the persons in the ascending order of their weights is
(a) Anthony, Akbar, Farah, Amar
(b) Anthony, Akbar, Amar, Farah
(c) Akbar, Anthony, Amar, Farah
(d) Akbar, Anthony, Farah, Amar
3072: If a commodity is provided free to the public by the Government, then
(a) the opportunity cost is zero.
(b) the opportunity cost is ignored.
(c) the opportunity cost is transferred from the consumers of the product to the tax-paying public.
(d) the opportunity cost is transferred from the consumers of the product to the Government.
3073: 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
3074: The following are the events in national movement:
I. Champaran Satyagraha
II. Non-Cooperation Movement
III. Quit India Movement
IV. Dandi March
The correct chronological order is
(a) I, II, IV, III
(b) II, I, III, IV
(c) III, II, I, IV
(d) II, III, I, IV
3075: For reproducing sound, a CD (Compact Disc) audio player uses a
(a) quartz crystal
(b) titanium needle
(c) laser beam
(d) barium titanate ceramic