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GeographyEasyAsked in: NDA · NDA-I 2021, GAT

Which one of the following clouds is a rain-bearing cloud?

  1. A.Cumulus cloud
  2. B.Stratus cloud
  3. C.Nimbus cloud
  4. D.Cirrus cloud

Correct answer

C. Nimbus cloud

Explanation

The correct answer is C, Nimbus cloud. The word nimbus means rain cloud: these dark, thick clouds bring steady rain or snow.

Nimbus clouds form at low to middle heights and are so dense that sunlight hardly passes through them, which is why they look dark grey or black. In the modern classification the word appears in nimbostratus, a thick grey sheet that gives continuous rain over a wide area, and cumulonimbus, the towering thunderstorm cloud that brings heavy showers, lightning and hail. The four basic cloud forms are cirrus, cumulus, stratus and nimbus.

A is wrong because ordinary cumulus clouds are puffy fair-weather clouds with flat bases; only when they grow into cumulonimbus do they give rain. B is wrong because stratus is a low grey layer that usually gives only drizzle or mist. D is wrong because cirrus clouds are thin, feathery high clouds made of ice crystals and do not give rain.

Exam tip: Cirrus – high, feathery, fair weather; nimbus – dark, rain-bearing; cumulonimbus – thunderstorm.

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Q2.GeographyAsked in: CDS · CDS-II 2016, GKMedium

Which one of the following statements is not correct?

  1. A.Position of the Sun, Earth and Moon in a straight line of 180° angle is known as syzygy.
  2. B.Syzygy conjunction causes solar eclipse.
  3. C.Syzygy opposition causes lunar eclipse.
  4. D.Syzygy conjunction occurs at the time of perihelion only.
Show answer
Correct answer: D. Syzygy conjunction occurs at the time of perihelion only.

This statement is not correct, because conjunction happens at every new moon, about once a month, and has nothing to do with the Earth's closest point to the Sun.

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

Which one of the following about sugar industry of Peninsular India is not correct?

  1. A.High yield per hectare of sugarcane
  2. B.Higher sucrose content
  3. C.Long crushing season
  4. D.Most of the mills in the Peninsula are located mainly along the east coast
Show answer
Correct answer: D. Most of the mills in the Peninsula are located mainly along the east coast

This statement is not correct, because the peninsular sugar mills are concentrated mainly in Maharashtra and Karnataka, in the west and the interior of the plateau.