Which one among the following is not an atmospheric natural disaster ?
- A.Drought
- B.Hailstorm
- C.Frost
- D.Avalanche
Correct answer
Explanation
The correct answer is D, Avalanche. An avalanche is a mass of snow and ice sliding suddenly down a mountain slope. It is driven by gravity acting on the snowpack, so it is grouped with landslides as a terrestrial or mass-movement disaster, not an atmospheric one. Natural disasters are commonly sorted by where they begin: atmospheric (cyclones, thunderstorms, hailstorms, droughts, cold waves, frost), terrestrial (earthquakes, volcanoes, landslides, avalanches), aquatic (floods, tsunamis, storm surges) and biological (epidemics, locust swarms). Option A is wrong because drought comes from a long shortfall of rainfall, a failure of the atmosphere to deliver water. Option B is wrong because hail forms inside tall cumulonimbus storm clouds and falls from them. Option C is wrong because frost forms when air near the ground cools below freezing and its water vapour turns straight into ice. Exam tip: avalanche and landslide are terrestrial; drought, hail and frost are atmospheric; flood and tsunami are aquatic.
Practice Questions
View allLoktak lake is situated in the State of
- A.Sikkim
- B.Manipur
- C.Odisha
- D.Mizoram
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Loktak Lake lies south of Imphal in Manipur and is the largest freshwater lake in North-East India. Loktak is famous for its phumdis, floating masses of soil, vegetation and decaying organic matter that drift on the water.
Read the full explanation →The formation of 'tors' on small rocky hills is associated with which among the following?
- A.Granite
- B.Limestone
- C.Alluvial
- D.Dolomite
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Tors are piles of rounded, weathered blocks standing on hilltops, and they form typically in granite. Granite cools deep underground and develops a network of joints, or cracks.
Read the full explanation →Which one of the following statements is NOT correct ?
- A.Bokaro steel plant is located in Damodar river basin
- B.Jamshedpur steel plant is located on the confluence of Damodar and Barakar
- C.Salem steel plant is located on the bank of Kaveri River
- D.Bhilai steel plant obtains water from Tandula reservoir
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Jamshedpur stands at the meeting point of the Subarnarekha and Kharkai rivers, not the Damodar and Barakar. Jamsetji Tata chose Sakchi, later named Jamshedpur, and the Tata Iron and Steel Company began production there in 1912.
Read the full explanation →Which of the following is/are warm ocean current(s) ? 1. Alaska Current 2. Agulhas Current 3. Falkland Current 4. West Australian Current Select the answer using the code given below :
- A.1 only
- B.1 and 2
- C.3 and 4
- D.4 only
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The Alaska Current and the Agulhas Current carry warm water, while the Falkland and West Australian currents are cold. A useful rule is that currents flowing from the tropics towards the poles are warm and those flowing from high latitudes towards the equator are cold.
Read the full explanation →Consider the following statements regarding the nature of rocks : I. Rocks are aggregates of one or more minerals. II. Granite is softer than soapstone. III. Gabbro is black and quartzite can be milky white. IV. Sedimentary rocks are related to foliation. Which of the statements given above are not correct ?
- A.I and II
- B.I and III
- C.II and IV
- D.II and III
Show answer
Granite is far harder than soapstone, and foliation is a feature of metamorphic rocks, not sedimentary ones, so these two statements are wrong.
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