IASbaba’s Daily Prelims Test [Day 16]

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IASbaba Daily Prelims Test [Day 16]

Topic: Soil and Environment (Current Affairs)

1. Khadar soils are preferred over Bhangar soils for crop cultivation because

1. Khadar soil are composed of fine particles than that of Bhangar soil.
2. Bhangar soils lack in kankar nodules.

Choose the correct reason from the codes below.

1. 1 only.
2. 2 only.
3. Both
4. none of the above.

2. Why are black soils treated with cement or hydrated lime during Roadways and railways construction? Consider the reasons

1. To overcome problems of volume changes due to alternate expansion and shrinkage of soils.
2. To prevent soil erosion during wet season.
3. To improve bearing capacity of the soil.

Choose the correct reason from the codes below.

1. 1, 2 only.
2. 2, 3 only.
3. 1, 3 only.
4. All the above.

3. Although laterite soils are formed in regions with high rainfall and high temperature, it requires good dosage of manures. What are the reasons?

1. Intense leaching because of high rainfall.
2. lack or less availability of humus.

Choose the correct code from the following

1. 1 only.
2. 2 only.
3. Both .
4. None of the above.

4. Left hand side is the region and right hand side is the major reason in that region for soil degradation.

1. Odisha, Jharkhand — deforestation and mining.
2. Rajasthan, Maharashtra — over irrigation.
3. Punjab, Haryana — overgrazing.

Which are correctly matched?

1. 1 only.
2. 1, 2 only.
3. All the above.
4. None of the above.

5. Black soils are known for its fertility with little or no evidence of exhaustion. This is because

1. Black soils with equal proportion of clay, gravel and coarse sand has high moisture retention capacity.
2. Cracks developed during dry season allows oxygenation of the soils.
3. Black soil has low level of kankar thus supports wide variety of crops.

Choose the incorrect reason from the codes below

1. 1 Only.
2. 2, 3 only.
3. 1, 3 only.
4. All the above.

6. Consider the statements regarding red and yellow soils.

1. Soil looks yellowish when iron diffused in the soil gets hydrated.
2. Red and yellow soils are mainly found in the deltaic regions especially in the Eastern Indian coast.
3. Less fertile coarser soils are found in the uplands while fertile fine soils occur in the low lying regions.

Which are the correct statements?

1. 1 only.
2. 1, 2 only.
3. 1, 3 only.
4. 2, 3 only.

7. Consider the following statements regarding a particular soil

1. Found in the summits of Western Ghats, Eastern Ghats, Vindhyas, Sathpuras and Malwa plateau.
2. Subjected to intense leaching and thus not fit for agriculture unless manures and fertilizers are used.
3. It is the end product of weathering process and thus it is indefinitely durable.

Which is the soil that is spoken about in the above statements?

1. Forest soil.
2. Mountain Soil.
3. Laterite soil.
4. Red soil.

8. Consider the statements regarding salinization which is a one of the major problem, reducing Indian agricultural productivity.

1. In drier regions, capillary action can lead to salt accumulation on the surface of the land which is brought from the deep saline ground water tables.
2. Irrigation can result in salinization of soils.
3. It can occur both naturally as well as artificially.

Choose the correct statements from the codes given below.

1. 1, 2 only.
2. 1, 3 only.
3. 2, 3only.
4. All the above.

9. The soil salinization occurred due to irrigation is a concern in drier regions and not in humid regions. Consider the following statements

1. In humid regions, there is enough precipitation to leach (wash) the salts below the plant root zone.
2. In drier regions, higher temperature leads to higher evaporation of water resulting into leaving behind of salt on the surface of the soil.
3. Soil salinization occurring due to irrigation can equally impact both humid areas as well as drier areas.

Choose the correct statement from the code given below

1. 1, 2 only.
2. 1 only.
3. 2 only.
4. 3 only.

10. Laterite soils and Forest soils are acidic in nature. What is the reason for this?

1. High rainfalls leach away the cations into sub soil region.
2. Trees and plants absorb the cations necessary for their development.
3. Cations are washed away along with running water and drained into sea/ocean.
4. None of the above reasons are correct.

Current Affairs- Environment

11. Consider the statements about adaptation in the animals leading a subterranean mode of life:

1. Digging organs for food
2. Special body contour to increase metabolism
3. Neck and pinnae are reduced to avoid obstruction in quick movement through the holes

Select the correct code:

1. 1 Only
2. 2 Only
3. 1 and 2 Only
4. 1and 3 Only

12. Consider the statements regarding desert adaptation

1. Hygroscopic skin to absorb moisture
2. Large pinnae to function as efficient heat radiators
3. Impermeable skin

Select the correct code:

1. 1 Only
2. 1 and 2 Only
3. 1 and 3 Only
4. All of the above

13. Consider the statements- Acid rain results into

1. Deterioration of Forests
2. Destruction of Automotive coating.
3. Reduction of Photosynthetic rate
4. Increase methane emission from wetlands.

 Select the correct code:

1. 1 and 2 Only
2. 1, 2 and 3 Only
3. 1, 3and 4 Only
4. All of the above

14. Choose the right one about oil spill

1. It reduces Photosynthetic activities in water bodies.
2. It results into killing of birds and mammals that die of hypothermia
3. Food web of water bodies gets even more complex

Select the correct code:

1. 1 Only
2. 1, 2 Only
3. 1, 3 Only
4. All of the above

15.  Out of initiatives given below which will prove to be factors having positive impact on menace of global warming.

1. Eastern Dedicated Freight Corridor (DFC) Project
2. Digital India.
3. Campaign stressing on use of LED bulbs
4. “Give it up” campaign.

Select the correct code:

1. 1 and 2 Only
2. 1, 2 and 3 Only
3. 1, 3and 4 Only
4. All of the above

16. What are the factors for extinction of wildlife throughout the world

1. Alteration of habitat.
2. Indroduction of foreign species.
3. Control of pests and predators.
4. Captive breeding

Select the correct code:

1. 1 and 2 Only
2. 1, 2 and 3 Only
3. 1, 3and 4 Only
4. All of the above

17. Consider the statements:

1. Elephant Information Network (EIN) has enabled human-elephant coexistence in southern India
2. Recently, Dr. Pramod Patil was awarded for developing Elephant Information Network (EIN)

Select the correct code:

1. 1 Only
2. 2 Only
3. Both
4. None

18. Read the different terms given below and select one or more that sequestrate the atmospheric green house gases:

1. Black Carbon
2. Brown Carbon
3. Blue Carbon
4. Green Carbon

 Select the correct code:

1. 4 Only
2. 3 and 4 Only
3. All of the above
4. None

19. Addition of iron particle to ocean will result into:

1. Increase in Marine Biological Productivity.
2. Increase in carbon dioxide in atmosphere by degassing.
3. Decrease in Sea Surface temperature.

Select the correct code:

1. 1and 3 Only
2. 2 and 3 Only
3. All of the above
4. 4 only

20. What is/are implicitly/explicitly related to wetland management?

1. Convention on biological diversity (CBD).
2. Montreux Record.
3. Hyogo framework of action.

Select the correct code:

1. 1and 3 Only
2. 2 and 3 Only
3. All of the above
4. 4 only

21. Indian Green Building Council (IGBC) New Green Buildings rating system addresses green features under certain categories. What are they?

1. Site selection and planning
2. Innovation and Development
3. Water Conservation
4. Energy Efficiency

Select the correct order

1. 1 and 2
2. 2 and 3
3. 1, 3 and 4
4. All

22. Canary birds are used as early warning system in coal mines. What are the reasons for this?

1. They are able to detect the presence of toxic gases like carbon monoxide.
2. Their breathing rate is slow as compared to human that helps them to reach to the depth of mines
3. They have high metabolism

Select the correct code

1. Only 1
2. 2 and 3
3. 1 and 3
4. All

23. Consider the following with respect to Western Ghat and rainfall pattern along it

1. Karnataka receives more rainfall than Kerala and Maharashtra because of steep slopes and continuous Mountains
2. The mountain topography in Karnataka is broader than the narrow topography of the Ghats in Maharashtra and Kerala.

Select the incorrect statements

1. Only 1
2. Only 2
3. Both
4. None

24. Among the following that has major content of carbon

1. Soil
2. Forests
3. Ocean
4. Atmosphere

25. Consider the statements regarding Biosequestration

1. Biosequestration is an artificial process that captures and stores the atmospheric greenhouse gas carbon dioxide by biological processes.
2. 2. Biosequestration is a natural process responsible for the formation of the extensive coal and oil deposits which are now being burned.

Select the correct code

1. Only 1
2. Only 2
3. Both
4. None

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