2571: Which of the following is not true about Mughal army?
(a) Mughal army was mainly standing army.
(b) It had large cavalry.
(c) When Mughal army used to come out, it seemed as if population of a big city is emerging.
(d) It had large infantry.
2572: Which of the following statements best describes "carbon fertilization"?
(a) Increased plant growth due to increased concentration of carbon dioxide in the atmosphere
(b) Increased temperature of Earth due to increased concentration of carbon dioxide in the atmosphere
(c) Increased acidity of oceans as a result of increased concentration of carbon dioxide in the atmosphere
(d) Adaptation of all living beings on Earth to the climate change brought about hr the increased concentration of carbon dioxide in the atmosphere
2573: What was the objectives of Home Rule Movement?
(a) Self government at all levels
(b) Eradication of evils like Sati in the Indian community
(c) Participation in Indian National Movement
(d) Boycott of foreign goods
2574: Barkhan is a
(a) Crescent shaped sand-dune
(b) Depositional bar, separated by water from the coast
(c) Dark coloured, fine grained rock
(d) Glacial erosional feature
2575: Acid precipitation is now regarded as a serious problem in some European and Asian countries. Its major cause or source is
(a) discharge of acidic effluents onto neutral or slightly alkaline land where the acidic components precipitate
(b) emissions of sulphur oxides and nitrogen oxides from thermal power plants and burning of fossil fuels; these oxides dissolve in atmospheric water vapour and fall back on earth as acid rain
(c) natural carbon dioxide released during respiration of living organisms dissolves in water, forming carbonic acid which is the chief contributor to acidity in rain water
(d) chloro-fluoro-carbons readily react with various chemicals near the earth's surface, producing acidic intermediates which cause acid precipitation