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Published in: English | Geography | History
  • Harpreet K

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Important themes explained with minute details in easy language.

  • 1
    BOARD - CBSE SUBJECT - GEOGRAPHY CLASS- IX-X 1. Name one transported soil found in India. Ans. ALLUVIAL SOIL (TRANSPORTED SOIL) When the soil is carried from the place of its origin to another place by the agents of degradation — the rivers, is called the transported soil, e.g. — Alluvial Soil. Alluvial is the main transported soil as it is transported from the three rivers of India - the Ganga, the Brahmaputra and the Indus, and being the most fertile soil, is mostly found in the extensive tracts of Punjab, Uttar Pradesh, Bihar, Orissa and the coastal areas of Peninsular India and are also found in parts of Gujarat and Rajasthan. 2. Ans. Which soil is best for the cultivation of coffee in Karnataka? SANDY LOAM The soil with sub — surface drainage (sandy loam) with the presence of humus and nitrogenous matter on steep mountain slopes, under the shade of taller trees — bananas, make the best for the growth of coffee. The coffee plant is grown under the shade because direct sunlight is harmful for the seeds to sprout. 3. Which atmospheric layer has the most air? Ans. THE TROPOSPHERE The Troposphere, being the lowest layer of the atmosphere, extends from Earth's surface to an average height of about 12 km (7.5ml: 39,000ft) above sea level. The layer contains 80 percent of the mass of Earth's atmosphere, and 99 percent of the water vapour, and this is the layer where Earth's water vapour, carbon dioxide, air pollution, clouds, weather and all the forms of life — humans, marine and animal life, exist. 4. Which planet has the thinnest atmosphere? Ans. PLANET HAVING THIN ATMOSPHERE PLANET MARS has a very thin atmosphere composed of 96 per cent carbon dioxide, 1.93 percent argon and 1.89 percent nitrogen along with traces of oxygen and water. Mars' average temperature is — 46 degrees C (51 degrees F), with a low of -143 degrees C (- 225.4 degrees F) during the winter at the poles, and a high of 35 degrees C (95 degrees F) during summer and midday at the equator. Because of its thin atmosphere and its greater distance from the Sun, the surface temperature of Mars is much colder than what we experience here on Earth.
  • 2
    Explain the term — DOAB. 5. DOAB is a word derived from two Latin words - "DO" means "the two" and " AB" means "the Ans. rivers", and geographically, the term DOAB refers to a water —rich tract of land lying between the convergence of the two rivers — the Ganges and the Yamuna. The GANGA — YAMUNA DOAB (Uttar Pradesh Doab) comprises of the flat alluvial tract between the Ganges and Yamuna rivers extending from the Shivalika Hills to the two rivers' confluence at Allahabad, having an area of about 23, 360 square miles (60, 500 square km), 500 miles (805 km) in length and 60 miles (97 km) in width. 6.


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