266: 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
267: In which type of rocks, fossils are more abundantly found?
(a) Igneous
(b) Metamorphic
(c) Sedimentary
(d) None of these
268: Which one of the following cities is nearest to the equator ?
(a) Jakarta
(b) Colombo
(c) Singapore
(d) Manila
Explanation:
Colombo is the largest city and commercial capital of Sri Lanka. Located on the west coast of the island and adjacent to Sri Jayawardenepura Kotte, the administrative capital of Sri Lanka, Colombo is a busy and vibrant city with a mixture of modern life and colonial buildings and ruins. It lies about 400 miles (645 kilometers) north of the Equator. Jakarta is the capital and largest city of Indonesia. Jakarta is located on the northwestern coast of Java Island, at the mouth of the Ciliwung River on Jakarta Bay, which is an inlet of the Java Sea. Lying near the equator, Jakarta is hot and humid year-round The City of Manila or simply Manila, is the capital of the Philippines and one of the cities that make up the greater metropolitan area of Metro Manila. Manila is located approximately 500 miles north of the geomagnetic equator. Singapore is an island nation located at the southern tip of the Malay Peninsula. It lies 137 kilometres (85 mi) north of the equator, south of the Malaysian state of Johor and north of Indonesia's Riau Islands.
269: Of the four places marked 1, 2, 3, and 4 of the map, the one indicating a tidal port is
(a) 1
(b) 2
(c) 3
(d) 4
Explanation:
It is Kandla, a tidal port with higher tide range located in Gujarat. (Hughli is considered as a riverine port).
270: The Partnership for Action on Green Economy (PAGE), a UN mechanism to assist countries transition towards greener and more inclusive economies, emerged at
(a) The Earth Summit on Sustainable Development 2002, Johannesburg
(b) The United Nations Conference on Sustainable Development 2012, Rio de Janeiro
(c) The United Nations Framework Convention on Climate Change 2015, Paris
(d) The World Sustainable Development Summit 2016, New Delhi