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GeographyMediumAsked in: SSC CPO · 27 Jun 2024, Shift 2

The depositional pattern of CaCO 3 and other materials that extend upwards from the floor of a limestone cavern is known as:

  1. A.Hatectite
  2. B.Stalagmite
  3. C.Stalactite
  4. D.Dripstone

Correct answer

B. Stalagmite

Explanation

The correct answer is B, Stalagmite. A stalagmite is a column of calcium carbonate that rises from the floor of a limestone cave. Rainwater with dissolved carbon dioxide slowly dissolves limestone and carries it as calcium bicarbonate. When this water drips inside a cave, carbon dioxide escapes and a thin layer of calcium carbonate is left behind, drop after drop, for thousands of years. The drop that hangs from the roof builds a stalactite, and the water that falls on the floor builds a stalagmite below it; when the two meet they form a pillar. Such cave landforms are part of karst topography, seen in India in the Borra Caves of Andhra Pradesh and the caves of Meghalaya. A is wrong because hatectite is not a standard cave term. C is wrong because a stalactite hangs down from the roof, the opposite of what the question describes. D is wrong because dripstone is the general name for all such drip deposits, stalactites and stalagmites alike, not the upward form alone. Exam tip: stalaCtite hangs from the Ceiling, stalaGmite rises from the Ground.

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.