4496: Terrace cultivation is practised mostly
(a) In urban areas
(b) On slopes of mountains
(c) On tops of hills
(d) In undulating tracts
4497: The winter rain in Madras is caused by:
(a) South-West Monsoons
(b) North-East Monsoons
(c) Intense land and sea breezes
(d) Cyclonic winds in the Bay of Bengal
4498: Which one of the following stars is nearest to the earth ?
(a) Polaris
(b) Alpha Centauri
(c) Sun
(d) Sirius
4499: Consider the following:
1. Oxides of Hydrogen
2. Oxides of Nitrogen
3. Oxides of Sulphur
Which of the above causes/cause acid rain ?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
4500: Tropical rain forests appear in which of the following regions?
(a) South America, South Africa and Central Europe
(b) Central America, parts of Australia, Guinea Coast
(c) Congo basin, Central America, South East Asia
(d) North and South of the Congo basin