1. Which of the following statements is correct about laterite soil? ( UPPSC 2023)
1. This soil is developed in areas with high-temperature and heavy rainfall
2. It is poor in iron oxide and aluminum
Select the correct answer using the code given below-
Codes:
a) Neither 1 nor 2
b) Both 1 and 2
c) Only 1
d) Only 2
Answer. c) Only 1
Laterite is a soil and rock type rich in iron and aluminum and is commonly considered to have formed in hot and wet tropical areas.
2. Which of the following soils of India has been formed due to weathering of basaltic lava?( UPPSC 2015)
a) Alluvial Soils
b) Laterite Soils
c) Red Soils
d) Regur Soils
Answer. d;
Regur soils are also called black soil which is predominantly found in the Deccan trap.
3. Indiscriminate use of fertilizers has led to ( UPPSC 2016)
a) Soil pollution
b) Water pollution
c) Air pollution
d) All of the above
Answer. d.
4. Which of the following statements is NOT correct? ( UPPSC 2018)
a) Black soil is locally called 'regur'
b) According to Krabs, the regur soil is essentially a mature soil
c) Black soils are highly retentive to moisture
d) Black soil is found in the Himalayan region
Answer. d
5. Which of the following is concerned with soil? ( UPPSC 2018)
a) Edaphic
b) Climatic
c) Biotic
d) Topography
Answer. a
6. With reference to agricultural soils, consider the following statements: ( UPSC 2018)
1. A high content of organic matter in soil drastically reduces its water-holding capacity.
2. Soil does not play any role in the sulfur cycle.
3. Irrigation over a period of time can contribute to the salinization of some agricultural lands.
Which of the statements given above is/are correct?
a) 1 and 2 only
b) 3 only
c) 1 and 3 only
d) 1, 2 and 3
Answer. b)
7. What can be the impact of excessive/inappropriate use of nitrogenous fertilizers in agriculture? ( UPSC)
1. Proliferation of nitrogen-fixing microorganisms in soil can occur.
2. An increase in the acidity of soil can take place.
3. Leaching of nitrate to the groundwater can occur.
Select the correct answer using the codes given below.
a) 1 and 3 only
b) 2 only
c) 2 and 3 only
d) 1, 2 and 3
Answer. c)
8. In India, the problem of soil erosion is associated with which of the following? ( UPSC 2014)
1. Terrace cultivation
2. Deforestation
3. Tropical climate
Select the correct answer using the code given below.
a) 1 and 2 only
b) 2 only
c) 1 and 3 only
d) 1, 2 and 3
Answer. b)
9. Which of the following adds/adds nitrogen to the soil? ( UPSC 2023)
1. Excretion of urea by animals
2. Burning of coal by man
3. Death of vegetation
Select the correct answer using the codes given below:
a) 1 only
b) 2 and 3 only
c) 1 and 3 only
d) 1, 2 and 3
Answer. c)
10. Contour bunding is a method of soil conservation used in ( UPSC 2023)
a) desert margins, liable to strong wind action
b) low flat plains, close to stream courses, liable to flooding
c) scrublands, liable to the spread of weed growth
d) None of the above
Answer: D)
11. Which of the following statements regarding the laterite soils of India are correct? ( UPSC 2023)
1. They are generally red in color.
2. They are rich in nitrogen and potash.
3. They are well-developed in Rajasthan and UP.
4. Tapioca and cashew nuts grow well on these soils.
Select the correct answer using the codes given below:
a) 1, 2, and 3
b) 2, 3 and 4
c) 1 and 4
d) 2 and 3 only
Answer. c)
12. Consider the following agricultural practices: ( UPSC 2012)
1. Contour bunding
2. Relay cropping
3. Zero tillage
In the context of global climate change, which of the above helps/help in carbon sequestration/storage in the soil?
a) 1 and 2 only
b) 3 only
c) 1, 2 and 3
d) None of them
Answer. c)
13. If a tropical rainforest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because ( UPSC 2011)
a) The soil of the forest is deficient in nutrients
b) Propagules of the trees in a rainforest have poor viability
c) The rainforest species are slow-growing
d) Exotic species invade the fertile soil of rainforest
Answer. a) The soil of the forest is deficient in nutrients
14. Where was the Mitti Bachao (Save the Soil) movement started in India? ( UPPSC 2020)
a) Thane, Maharashtra
b) Mysore, Karnataka
c) Darbhanga, Bihar
d) Hoshangabad, Madhya Pradesh
Answer. d; Hoshangabad, MP
Hoshangabad lies in the Vindhya range and it is also the meeting point of the Narmada and Tawa river where the Tawa dam has been built. In 1977 Mitti Bachao movement started against the waterlogging and salinity caused by the Tawa dam.
15. Which one of the following is NOT a factor of soil formation?
a) time
b) soil texture
c) organic matter
d) climate
Answer. b) Soil texture
Soil texture is the physical property of soil; soil texture is not a factor of soil formation.
The following are factors of soil formation:
Parent rock
Climate[ Precipitation, temperature]
Relief[ Slope, Altitude]
Flora, Fauna, and Mico-organisms
Time
16. Which one of the following methods is most appropriate to check soil erosion on steep slopes?
a) shelterbelts
b) mulching
c) terrace cultivation
d) contour binding
Answer. c) Terrace cultivation.
The terrace is a broad flat step made up of steep slopes.
Terrace cultivation is most appropriate to check soil erosion on steep slopes.
Mulching is most appropriate to check erosion on bare ground.
In the coastal region and dry regions, shelterbelts are panted to check wind erosion.
17. Which of the following influences the rate of weathering and humus formation of Soils?
a) Parent Rocks
b) Climate
c) Relief
d) Time
Answer. b) Climate( precipitation and temperature)
18. Which of the following determines the color, texture, chemical, properties, minerals, content, and permeability of soils?
a) Parent Rocks
b) Climate
c) Relief
d) Time
Answer. a) Parent Rocks
19. Which of the following determines the accumulation of soil?
a) Parent Rocks
b) Climate
c) Relief
d) Time
Answer. c) Relief
20. Which of the following determines the thickness of the soil profile?
a) Parent Rocks
b) Climate
c) Relief
d) Time
Answer. d) Time
21. Which of the following factors leads to soil degradation?
a) deforestation
b) overgrazing
c) overuse of chemical fertilizers or pesticides
d) All of the above
Answer. d) All of the above
22. Which of the following are soil conservation methods?
a) Mulching and Contour barriers
b) Intercropping and Contour Ploughing
c) Rock dam and terrace farming
d) All of the above
Answer. d) All of the above
23. The bare ground between plants is covered with a layer of organic matter like straw to retain soil moisture. This type of soil conservation is called?
a) Mulching
b) Intercropping
c) Contour Ploughing
d) Contour barriers
Answer. a) Mulching
24. Stones, grass, and soil are used to build barriers, and Trenches are made in front of the barriers to collect water. This type of soil conservation is called?
a) Mulching
b) Intercropping
c) Contour Ploughing
d) Contour barriers
Answer. d) Contour barriers.
25. Rocks are piled up to slow down the flow of water. This prevents gullies and further soil loss. This type of soil conservation is called?
a) Rock dam
b) Intercropping
c) Contour Ploughing
d) Terrace farming
Answer. a) Rock dam
26. Broad flat steps or terraces are made on steep slopes to reduce surface runoff and soil erosion. This type of soil conservation is called?
a) Shelterbelt
b) Intercropping
c) Contour Ploughing
d) Terrace farming
Answer. d) Terrace farming
27. Different crops are grown in alternate rows and are sown at different times to protect the soil from rain wash. This type of soil conservation is called?
a) Shelterbelt
b) Intercropping
c) Contour Ploughing
d) Terrace farming
Answer. b) Intercropping
28. Ploughing parallel to the contours of a hill slope to form a natural barrier for water to flow down the slope. This type of soil conservation is called?
a) Shelterbelt
b) Intercropping
c) Contour Ploughing
d) Terrace farming
Answer. c) Contour Ploughing
29. In the coastal and dry regions, rows of trees are planted to check the wind movement to protect soil cover. This type of soil conservation is called?
a) Shelterbelt
b) Intercropping
c) Contour Ploughing
d) Terrace farming
Answer. a) Shelterbelt
30. Organic matter deposited on topsoil is called?
a) Land use
b) Humus
c) Rock dams
d) Biosphere
Answer. b) Humus
31. In India, the maximum area is covered by which type of soil?
a) Laterite Soil
b) Red Soil
c) Black Soil
d) Alluvial Soil
Answer. d) Alluvial Soil
Alluvial Soil ( 43%)
Red Soil ( 18.5 %)
Black soil( 15 %)
32. Munsell color system is used to determine--------
a) Soil color
b) Leaf color
c) Soil texture
d) Soil Porosity
Answer. a) Soil color
33. Which soil type is having highest Phosphorus fixing capacity?
a) Alluvial Soil
b) Black Soil
c) Laterite Soil
d) Red Soil
Answer. d) Red Soil
34.
ConversionConversion EmoticonEmoticon