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GeographyEasyAsked in: SSC CHSL · 16 March, 2023, Shift 2

What type of the rock is Granite?

  1. A.Extrusive igneous rocks
  2. B.Sedimentary rocks
  3. C.Metamorphic rocks
  4. D.Intrusive igneous rocks

Correct answer

D. Intrusive igneous rocks

Explanation

The correct answer is D, Intrusive igneous rocks. Granite forms when magma cools slowly deep inside the crust, so it is an intrusive, or plutonic, igneous rock. The slow cooling lets large crystals of quartz, feldspar and mica grow, which is why granite has a coarse, grainy look you can see with the naked eye. It is hard, weather-resistant and takes a fine polish, so it is used for temple floors, kitchen counters and monuments; India is one of the world's largest exporters of granite. Rocks such as gabbro and dolerite belong to the same intrusive family. Option A is wrong because extrusive rocks form when lava cools quickly at the surface, giving fine-grained rocks like basalt, the rock of the Deccan Traps. Option B is wrong because sedimentary rocks such as sandstone and limestone are built from deposited layers. Option C is wrong because metamorphic rocks are older rocks changed by heat and pressure; granite itself turns into gneiss. Exam tip: granite intrusive, basalt extrusive, granite to gneiss, limestone to marble.

Practice Questions

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Q2.GeographyAsked in: CDS · CDS-II 2017, GKMedium

Which of the following statements is/are correct? 1. Himalayan rivers have their origin in the snow-covered areas, hence are dry in winter season. 2. Rivers of the Peninsular Plateau have reached maturity. 3. Himalayan rivers depict all the three stages of normal cycle of erosion. Select the correct answer using the code given below.

  1. A.2 only
  2. B.1 and 3 only
  3. C.2 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: C. 2 and 3 only

Himalayan rivers are perennial, so statement 1 is wrong, while statements 2 and 3 are correct. Himalayan rivers such as the Ganga, Indus and Brahmaputra rise from glaciers and snowfields and also get monsoon rain, so they flow all year round, including in winter.

Q3.GeographyAsked in: CDS · CDS-II 2017, GKMedium

Which of the following statements related to latitude are true? 1. Rainfall, temperature and vegetation vary with latitude. 2. The difference between the longest day and the shortest day increases with latitude. 3. Indira Point is located approximately at 6°45' N latitude. Select the correct answer using the code given below.

  1. A.1 and 2 only
  2. B.1 and 3 only
  3. C.2 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: D. 1, 2 and 3

All three statements about latitude are true. Latitude decides how directly the Sun's rays strike a place, so temperature, rainfall and the type of vegetation change from the equator towards the poles, from hot, wet rainforests to cold tundra.

Q4.GeographyAsked in: CDS · CDS-II 2017, GKMedium

Which of the following lakes is/are situated in Ladakh? 1. Tso Kar 2. Pangong Tso 3. Tsomgo 4. Tso Moriri Select the correct answer using the code given below.

  1. A.1 only
  2. B.2 and 3
  3. C.1, 2 and 4
  4. D.2 and 4 only
Show answer
Correct answer: C. 1, 2 and 4

Tso Kar, Pangong Tso and Tso Moriri are high-altitude lakes of Ladakh, while Tsomgo lies in Sikkim. Pangong Tso, at about 4,350 metres, is a long, narrow lake that stretches from Ladakh into Tibet, and most of its length lies on the Chinese side.