3806: With reference to agricultural soils, consider the following statements :
1. A high content of organic matter in soil drastically reduces its water holding capacity.
2. Soil does not play any role in the sulphur cycle.
3. Irrigation over a period of time can contribute to the salinization of some agricultural lands. Which of the statements given above is/are correct ?
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
3807: A genetically engineered form of brinjal Known as the Bt-brinjal has been developed. The objective of this is
(a) To make it drought-resistant
(b) To make its shelf-life longer
(c) To improve its taste and nutritive qualities
(d) To make it pest-resistant
3808: In the given figure, the triangle represents girls, the square represents sports persons and the circle represents coaches. The portion in the figure which represents girls who are sports persons but not coaches is the one labelled
(a) A
(b) B
(c) D
(d) E
3809: Which one of the following straits is nearest to the International Date Line?
(a) Strait of Hormuz
(b) Bering Strait
(c) Malacca Strait
(d) Strait of Gibraltar
3810: The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?
(a) Increased temperature at polar region due to global warming
(b) Presence of prominent polar front and stratospheric Clouds and inflow of chlorofluorocarbons
(c) Absence of polar front and stratospheric clouds and inflow of methane and chlorofluorocarbons
(d) Presence of prominent tropospheric turbulence and inflow of chlorofluorocarbons