INSIGHTS STATIC QUIZ 2020 - 21
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Question 1 of 5
1. Question
Which of the following processes help in the concentration of minerals on earth?
- Hydrothermal deposits
- Weathering
- Water erosion
Select the correct answer code:
Correct
Solution: d)
Minerals can also form in several other ways:
- Precipitation from aqueous solution (i.e., from hot water flowing underground, from evaporation of a lake or inland sea, or in some cases, directly from seawater)
- Metamorphism — formation of new minerals directly from the elements within existing minerals under conditions of elevated temperature and pressure
- Weathering — during which minerals unstable at Earth’s surface may be altered to other minerals
- Organic formation — formation of minerals within shells and teeth and bones by organisms.
Hydrothermal deposits are produced when groundwater circulates to depth and heats up either by coming near a hot igneous body at depth or by circulating to great depth along the geothermal gradient.
Such hot water can dissolve valuable substances throughout a large volume of rock. As the hot water moves into cooler areas of the crust, the dissolved substances are precipitated from the hot water solution.
The velocity of flowing water determines whether minerals are carried in suspension or deposited. For e.g. when the velocity of the water slows, large minerals or minerals with a higher density are deposited.
Incorrect
Solution: d)
Minerals can also form in several other ways:
- Precipitation from aqueous solution (i.e., from hot water flowing underground, from evaporation of a lake or inland sea, or in some cases, directly from seawater)
- Metamorphism — formation of new minerals directly from the elements within existing minerals under conditions of elevated temperature and pressure
- Weathering — during which minerals unstable at Earth’s surface may be altered to other minerals
- Organic formation — formation of minerals within shells and teeth and bones by organisms.
Hydrothermal deposits are produced when groundwater circulates to depth and heats up either by coming near a hot igneous body at depth or by circulating to great depth along the geothermal gradient.
Such hot water can dissolve valuable substances throughout a large volume of rock. As the hot water moves into cooler areas of the crust, the dissolved substances are precipitated from the hot water solution.
The velocity of flowing water determines whether minerals are carried in suspension or deposited. For e.g. when the velocity of the water slows, large minerals or minerals with a higher density are deposited.
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Question 2 of 5
2. Question
Assam shares its borders with which among the following states/countries?
1. Sikkim
2. China
3. Tripura
4. Meghalaya
5. BhutanSelect the correct answer code:
Correct
Solution: b)
Incorrect
Solution: b)
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Question 3 of 5
3. Question
Arrange these geographical regions from the East to West.
- Gulf of Aden
- Laccadive Sea
- Gulf of Thailand
- South China Sea
Select the correct answer code:
Correct
Solution: a)
Incorrect
Solution: a)
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Question 4 of 5
4. Question
Which one of the following factors is responsible for the change in the regular direction of the ocean currents in the Indian Ocean?
Correct
Solution: b)
Normally, ocean currents are under the greater influence of prevailing winds. Indian Ocean currents are largely under the influence of monsoon – A seasonal reversal of winds.
Incorrect
Solution: b)
Normally, ocean currents are under the greater influence of prevailing winds. Indian Ocean currents are largely under the influence of monsoon – A seasonal reversal of winds.
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Question 5 of 5
5. Question
The drainage pattern of an area is the outcome of which of the following factors
- Geological time period.
- Nature of rocks
- Structure of rocks
- Topography
- Amount of water flowing and periodicity of the flow.
Which of the above statements is/are correct?
Correct
Solution: c)
The flow of water through well-defined channels is known as ‘drainage’ and the network of such channels is called a ‘drainage system’. The drainage pattern of an area is the outcome of the ecological time period, nature and structure of rocks, topography, slope, amount of water flowing and the periodicity of the flow.
Incorrect
Solution: c)
The flow of water through well-defined channels is known as ‘drainage’ and the network of such channels is called a ‘drainage system’. The drainage pattern of an area is the outcome of the ecological time period, nature and structure of rocks, topography, slope, amount of water flowing and the periodicity of the flow.
