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question_answer1)
A well-developed soil profile is the result of:
A)
physical process done
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B)
chemical process done
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C)
organic process done
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D)
All of the above done
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question_answer2)
Of the four distinct layers or sections of soil profile, organic matter is found in:
A)
top soil done
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B)
second layer from the top done
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C)
third layer from the top done
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D)
the bottom layer done
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question_answer3)
Soils are classified according to their:
A)
colour and type of mineral content done
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B)
colour and texture done
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C)
texture and type of mineral content done
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D)
colour, texture and type of mineral content done
clear
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question_answer4)
________ does not lead to soil erosion.
A)
Deforestation done
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B)
Dense vegetation done
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C)
Over-grazing done
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D)
Winds done
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question_answer5)
Soil contains rock particle and_______.
A)
water and air done
clear
B)
water and plants done
clear
C)
minerals, organic matter, air and water done
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D)
water, air and plants done
clear
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question_answer6)
________ has the highest water holding capacity.
A)
Sandy soil done
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B)
Clayey soil done
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C)
Loamy soil done
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D)
All of them have same water holding capacity done
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question_answer7)
Various layers of soil are called:
A)
soil profile done
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B)
soil erosion done
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C)
horizon done
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D)
None of these done
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question_answer8)
Humus refers to the:
A)
top most layer done
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B)
bottom layer done
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C)
rotting dead matter in soil done
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D)
None of these done
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question_answer9)
Weathering is breaking down of rock by the action of:
A)
wind done
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B)
water done
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C)
climate done
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D)
wind, water and climate done
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question_answer10)
Horizons differ from each other in:
A)
colour done
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B)
depth done
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C)
chemical composition done
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D)
All of the above done
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question_answer11)
______ one be able to see the soil profile.
A)
While digging a well done
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B)
While laying the foundation of a building done
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C)
While making a deep cut through the soil done
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D)
In all the above cases done
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question_answer12)
___________ we can see the soil profile.
A)
At the sides of a road on a hill done
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B)
At steep of river bank done
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C)
Both the above done
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D)
None of these done
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question_answer13)
The upper most horizon of soil is:
A)
dark in colour done
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B)
rich in humus done
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C)
rich in minerals done
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D)
All of the above done
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question_answer14)
The topmost soil:
A)
is soft done
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B)
is a porous layer done
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C)
can retain more water done
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D)
All of the above done
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question_answer15)
Humus:
A)
makes the soil fertile done
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B)
provides nutrients to growing plants done
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C)
Both the above done
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D)
None of these done
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question_answer16)
___________ is present, in B-layer, in larger, quantities.
A)
Humus done
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B)
Minerals done
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C)
Water done
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D)
Air done
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question_answer17)
Which soil is well aerated, light and dry?
A)
Sandy soil done
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B)
Clayey soil done
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C)
Loamy soil done
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D)
None of these done
clear
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question_answer18)
Which top soil is best for growing plants?
A)
Sandy soil done
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B)
Clayey soil done
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C)
Loamy soil done
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D)
All of these done
clear
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question_answer19)
Which soil is used to make pots and toys?
A)
Sandy soil done
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B)
Clayey soil done
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C)
Loamy soil done
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D)
None of these done
clear
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question_answer20)
Which soil is used to grow cotton?
A)
Sandy soil done
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B)
Clayey and loamy soil done
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C)
Sandy loam soil done
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D)
None of these done
clear
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question_answer21)
Silt:
A)
is a type of soil particles done
clear
B)
occurs as deposit in river beds done
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C)
Both the above are correct done
clear
D)
None of these done
clear
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question_answer22)
Which soil has the right water holding capacity for growth of plants?
A)
Sandy soil done
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B)
Clayey soil done
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C)
Loamy soil done
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D)
None of these done
clear
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question_answer23)
Select the one that provides shelter for living organisms like worms, rodents, etc.
A)
A-horizon done
clear
B)
B-horizon done
clear
C)
C-horizon done
clear
D)
None of these done
clear
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question_answer24)
Which of the following are the substances that are present in the soil and required for the growth of crops?
A)
Manures done
clear
B)
Pesticides done
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C)
Fertilizers done
clear
D)
Nutrients done
clear
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question_answer25)
Fungi and bacteria grow mostly in
A)
subsoil done
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B)
top soil done
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C)
bedrock done
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D)
All of the above done
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question_answer26)
Which of the following worms live in the soil?
A)
Ringworm done
clear
B)
Flatworm done
clear
C)
Earthworm done
clear
D)
Silkworm done
clear
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question_answer27)
Which of the following kills the organisms in the soil?
A)
Metallic substances done
clear
B)
Earthen pots done
clear
C)
Polythene bags and plastics done
clear
D)
Glassware done
clear
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question_answer28)
Which of the following soils are good at retaining water?
A)
Sand and Clayey done
clear
B)
Loamy and Sandy done
clear
C)
Loamy and Clayey done
clear
D)
All of the above done
clear
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question_answer29)
The removal of top layer of soil by water, wind or ice is known as
A)
seepage done
clear
B)
sewage done
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C)
erosion done
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D)
None of these done
clear
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question_answer30)
Soil help plants by
A)
supplying them water and minerals done
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B)
supplying them air done
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C)
preparing food for plants done
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D)
helping them to move from one place to another. done
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question_answer31)
The rotting dead matter in the soil is called___
A)
decomposition done
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B)
humus done
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C)
petrification done
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D)
minerals done
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question_answer32)
____ is the collective name for layers of soil.
A)
A-horizon done
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B)
B-horizon done
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C)
C-horizon done
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D)
Soil profile done
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question_answer33)
______ affect the soil profile and bring changes in soil structure.
A)
Vegetation done
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B)
Animals done
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C)
Climatic factors done
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D)
Fertilizers done
clear
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question_answer34)
Which of the following should be increased to prevent soil erosion?
A)
Flow of water done
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B)
Deforestation done
clear
C)
Flow of wind done
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D)
Green areas done
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question_answer35)
______ is mixture of sand and clay.
A)
Clayey soil done
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B)
Humus done
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C)
Silt done
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D)
Loamy soil done
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question_answer36)
Which of the following statements is correct?
A)
Size of the particles present in a soil has no influence on the properties of soil. done
clear
B)
Loamy soil is a mixture of sand, clay and silt but contains no humus. done
clear
C)
Loamy soil is a mixture of sand, clay, silt and also contains humus. done
clear
D)
None of these done
clear
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question_answer37)
Which of the following statements is correct?
A)
Sandy soil is used to grow cotton. done
clear
B)
Clayey and loamy soil is used to grow gram. done
clear
C)
Both the above are correct. done
clear
D)
None of these done
clear
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question_answer38)
__________ contains particles of large size which cannot fit close together.
A)
Sandy soil done
clear
B)
Clayey soil done
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C)
Loamy soil done
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D)
None of these done
clear
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question_answer39)
Soil is defined as:
A)
mixture of rock particles and humus done
clear
B)
loose material on the surface of earth in which plants grow done
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C)
Both the above are correct done
clear
D)
None of these done
clear
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question_answer40)
_______ makes the upper crust of soil fertile.
A)
Presence of humus done
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B)
Presence of minerals done
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C)
Dark colour of the soil done
clear
D)
None of these done
clear
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question_answer41)
Why sandy soil is so well aerated?
A)
Due to large spaces between particles. done
clear
B)
Presence of air in large spaces between the particles. done
clear
C)
Presence of water in large spaces available between the particles done
clear
D)
None of these done
clear
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question_answer42)
DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.
Column - I | Column - II |
(A) Top soil | (p) Harder and more compact |
(B) Sandy soil | (q) High percolation rate |
(C) B-horizon | (r) Dark in color |
(D) Loamy soil | (s) Containing silt |
A)
(A) \[\to \] (r), (B) \[\to \] (q), (C) \[\to \] (p), (D) \[\to \] (s) done
clear
B)
(A) \[\to \] (s), (B) \[\to \] (r), (C) \[\to \] (q), (D) \[\to \] (p) done
clear
C)
(A) \[\to \] (p), (B) \[\to \] (q), (C) \[\to \] (r), (D) \[\to \] (s) done
clear
D)
(A) \[\to \] (q), (B) \[\to \] (r), (C) \[\to \] (s), (D) \[\to \] (p) done
clear
View Solution play_arrow
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question_answer43)
DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.
Column - I | Column - II |
(A) A - horizon | (p) Composed of different layers |
(B) Soil profile | (q) Rich in humus and minerals |
(C) Soil | (r) Can be seen at the sides of a road on a hill |
(D) Humus | (s) Rotting dead material in the soil |
A)
(A) \[\to \] (p), (B) \[\to \] (q), (C) \[\to \] (r), (D) \[\to \] (s) done
clear
B)
(A) \[\to \] (q), (B) \[\to \] (p), (C) \[\to \] (r), (D) \[\to \] (s) done
clear
C)
(A) \[\to \] (q), (B) \[\to \] (r), (C) \[\to \] (p), (D) \[\to \] (s) done
clear
D)
(A) \[\to \] (s), (B) \[\to \] (r), (C) \[\to \] (p), (D) \[\to \] (q) done
clear
View Solution play_arrow
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question_answer44)
DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.
Column - I | Column - II |
(A) Bed rock | (p) Made up of small lumps of rocks with cracks |
(B) C-horizon | (q) Removal of top soil by water, wind and ice |
(C) Humus | (r) Makes soil fertile |
(D) Soil erosion | (s) Difficult to dig with a spade |
A)
(A) \[\to \] (s), (B) \[\to \] (p), (C) \[\to \] (r), (D) \[\to \] (q) done
clear
B)
(A) \[\to \] (r), (B) \[\to \] (q), (C) \[\to \] (p), (D) \[\to \] (s) done
clear
C)
(A) \[\to \] (q), (B) \[\to \] (p), (C) \[\to \] (r), (D) \[\to \] (s) done
clear
D)
(A) \[\to \] (p), (B) \[\to \] (q), (C) \[\to \] (r), (D) \[\to \] (s) done
clear
View Solution play_arrow
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question_answer45)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 The natural process of soil formation from the rocks is called me weathering of rock. Weathering is the breaking and wearing down of rocks by the weather (sun, wind, water). In addition, the rocks may be weathered by living organisms. Rocks in nature get heated in sun and sudden rain may cool them. Rocks expand on heating and contract on cooling. Expansion and contraction of the rocks result in the formation of cracks within the rocks and finally they break into smaller pieces. Lichens grow on bare rocks. They retain moisture and also release carbon dioxide in the process of respiration. Carbon dioxide released during respiration gets dissolved in moisture forming carbonic acid. This acid reacts with the rock material to disintegrate it into soil. This is also called chemical weathering. In which of the following climates will chemical weathering be most rapid?
A)
Hot and dry done
clear
B)
Hot and humid done
clear
C)
Cold and dry done
clear
D)
Cold and humid done
clear
View Solution play_arrow
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question_answer46)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 The natural process of soil formation from the rocks is called me weathering of rock. Weathering is the breaking and wearing down of rocks by the weather (sun, wind, water). In addition, the rocks may be weathered by living organisms. Rocks in nature get heated in sun and sudden rain may cool them. Rocks expand on heating and contract on cooling. Expansion and contraction of the rocks result in the formation of cracks within the rocks and finally they break into smaller pieces. Lichens grow on bare rocks. They retain moisture and also release carbon dioxide in the process of respiration. Carbon dioxide released during respiration gets dissolved in moisture forming carbonic acid. This acid reacts with the rock material to disintegrate it into soil. This is also called chemical weathering. Which of the following statements about weathering is false?
A)
Rocks of different compositions weather at different rates done
clear
B)
Heat and heavy rainfall increase the rate of chemical weathering done
clear
C)
The presence of soil slows down the weathering of the underlying bedrock done
clear
D)
The longer a rock is exposed at the surface, the more weathered it becomes done
clear
View Solution play_arrow
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question_answer47)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 The natural process of soil formation from the rocks is called me weathering of rock. Weathering is the breaking and wearing down of rocks by the weather (sun, wind, water). In addition, the rocks may be weathered by living organisms. Rocks in nature get heated in sun and sudden rain may cool them. Rocks expand on heating and contract on cooling. Expansion and contraction of the rocks result in the formation of cracks within the rocks and finally they break into smaller pieces. Lichens grow on bare rocks. They retain moisture and also release carbon dioxide in the process of respiration. Carbon dioxide released during respiration gets dissolved in moisture forming carbonic acid. This acid reacts with the rock material to disintegrate it into soil. This is also called chemical weathering. Which of the following factors would increase the rate of weathering?
A)
Increasing rainfall done
clear
B)
Increasing temperature done
clear
C)
Increasing organic activity done
clear
D)
All of these done
clear
View Solution play_arrow
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question_answer48)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 The natural process of soil formation from the rocks is called me weathering of rock. Weathering is the breaking and wearing down of rocks by the weather (sun, wind, water). In addition, the rocks may be weathered by living organisms. Rocks in nature get heated in sun and sudden rain may cool them. Rocks expand on heating and contract on cooling. Expansion and contraction of the rocks result in the formation of cracks within the rocks and finally they break into smaller pieces. Lichens grow on bare rocks. They retain moisture and also release carbon dioxide in the process of respiration. Carbon dioxide released during respiration gets dissolved in moisture forming carbonic acid. This acid reacts with the rock material to disintegrate it into soil. This is also called chemical weathering. Which of the following human activities has resulted in increased rates of weathering?
A)
The release of sulfur and nitrogen oxides that cause acid rain done
clear
B)
The physical disintegration of rocks during construction and mining done
clear
C)
Both (a) and (b) done
clear
D)
Neither (a) nor (b) done
clear
View Solution play_arrow
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question_answer49)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 The natural process of soil formation from the rocks is called me weathering of rock. Weathering is the breaking and wearing down of rocks by the weather (sun, wind, water). In addition, the rocks may be weathered by living organisms. Rocks in nature get heated in sun and sudden rain may cool them. Rocks expand on heating and contract on cooling. Expansion and contraction of the rocks result in the formation of cracks within the rocks and finally they break into smaller pieces. Lichens grow on bare rocks. They retain moisture and also release carbon dioxide in the process of respiration. Carbon dioxide released during respiration gets dissolved in moisture forming carbonic acid. This acid reacts with the rock material to disintegrate it into soil. This is also called chemical weathering. Which of the following affect the rate of weathering?
A)
The soil type done
clear
B)
The rock type done
clear
C)
The climate done
clear
D)
All of these affect weathering rates done
clear
View Solution play_arrow
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question_answer50)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 The chemical substances which are rich from nutrients and used to maintain soil fertility are called fertilizers. They also produce harmful effects. They remain in the soil and spoil porous structure of the soil which is essential for plant growth. They also kill the soil organisms like earthworms. Earthworms burrows and loosens the soil and make it porous. Which of the following is a chemical fertilizer?
A)
Cow dung done
clear
B)
Urea done
clear
C)
Biological mass done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer51)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 The chemical substances which are rich from nutrients and used to maintain soil fertility are called fertilizers. They also produce harmful effects. They remain in the soil and spoil porous structure of the soil which is essential for plant growth. They also kill the soil organisms like earthworms. Earthworms burrows and loosens the soil and make it porous. Which of the following worms creates soil porousity and get killed by fertilizers?
A)
Ringworm done
clear
B)
Flatworm done
clear
C)
Earthworm done
clear
D)
Silkworm done
clear
View Solution play_arrow
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question_answer52)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 The chemical substances which are rich from nutrients and used to maintain soil fertility are called fertilizers. They also produce harmful effects. They remain in the soil and spoil porous structure of the soil which is essential for plant growth. They also kill the soil organisms like earthworms. Earthworms burrows and loosens the soil and make it porous. Which of the following statements is correct?
A)
Excessive use of chemical fertilizers cause soil pollution done
clear
B)
Organic manure should be used to decrease soil pollution done
clear
C)
Fertilizers spoil porous structure of the soil. done
clear
D)
Both (a) and (b) done
clear
View Solution play_arrow
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question_answer53)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as ?Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): The uppermost horizon is dark in colour. Reason (R): The uppermost horizon is called top soil.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer54)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as ?Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Soils can be classified on the basis of proportions of particles of various sizes present in them. Reason (R): In loamy soil the proportion of large and fine particles is almost same.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer55)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as ?Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): The uppermost layer is the topsoil which is exposed to air and it bears plants on it. Reason (R): Topsoil contains a lot of humus. Humus makes the soil fertile.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer56)
DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Soil takes thousands of years to be formed. (ii) Soil does not contain water.
A)
Statement (i) is correct while statement (ii) is incorrect. done
clear
B)
Statement (ii) is correct while statement (i) is incorrect. done
clear
C)
Both statements are correct done
clear
D)
Both statements are incorrect. done
clear
View Solution play_arrow
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question_answer57)
DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) B-horizon is the most fertile part of the soil. (ii) Bed rock lies above sub-soil.
A)
Statement (i) is correct while statement (ii) is incorrect. done
clear
B)
Statement (ii) is correct while statement (i) is incorrect. done
clear
C)
Both statements are correct done
clear
D)
Both statements are incorrect. done
clear
View Solution play_arrow
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question_answer58)
DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Red soil is best suited for growing wheat and rice. (ii) Black soils are ideal for growing cotton.
A)
Statement (i) is correct while statement (ii) is incorrect. done
clear
B)
Statement (ii) is correct while statement (i) is incorrect. done
clear
C)
Both statements are correct done
clear
D)
Both statements are incorrect. done
clear
View Solution play_arrow
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question_answer59)
DIRECTIONS: On the basis of following diagram/picture answer the questions given below: The diagram below shows stages in the development of a certain landscape.
When did erosion become the dominant process in the evolution of the landscape shown?
A)
at stage 1 done
clear
B)
at stage 2 done
clear
C)
between stages 2 and 3 done
clear
D)
between stages 3 and 4 done
clear
View Solution play_arrow
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question_answer60)
DIRECTIONS: On the basis of following diagram/picture answer the questions given below: Which of the horizon in this soil profile shown below is expected to have maximum amount of humus?
A)
Horizon-A done
clear
B)
Horizon-B done
clear
C)
Horizon-C done
clear
D)
Bedrock done
clear
View Solution play_arrow
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question_answer61)
In which soil is the proportion of fine and large particles is equal?
A)
Sandy soil done
clear
B)
Clayey soil done
clear
C)
Loamy soil done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer62)
Which soil has the highest percolation rate of water?
A)
Sandy soil done
clear
B)
Clayey soil done
clear
C)
Loamy soil done
clear
D)
All have the same percolation rate done
clear
View Solution play_arrow
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question_answer63)
Which of the following shows the correct arrangement of different layers of the soil?
A)
Top soil Sub soil Bed rock done
clear
B)
Sub soil Bed rock Top soil done
clear
C)
Bed rock Top soil Sub soil done
clear
D)
Sub soil Top soil Bed rock done
clear
View Solution play_arrow
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question_answer64)
Growing different types of crops in a piece of land season after season is called
A)
monoculture done
clear
B)
irrigation done
clear
C)
crop rotation done
clear
D)
manuring done
clear
View Solution play_arrow
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question_answer65)
_____ and _____ soils are suitable for growing cereals like wheat and gram.
A)
Clayey and Loamy done
clear
B)
Sandy and Clayey done
clear
C)
Sandy and Loamy done
clear
D)
Silt and Sandy done
clear
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question_answer66)
Which of the following crop is not grown in clayey soil?
A)
Wheat done
clear
B)
Gram done
clear
C)
Paddy done
clear
D)
Cotton done
clear
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question_answer67)
_______ makes the soil porous and fertile.
A)
Centipedes done
clear
B)
Millepedes done
clear
C)
Beetles done
clear
D)
Earthworms done
clear
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question_answer68)
The rate of chemical weathering is increased by adds. The most common natural aridon the Earth's surface is _____.
A)
nitric done
clear
B)
hydrochloric done
clear
C)
carbonic done
clear
D)
sulfuric done
clear
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question_answer69)
Carbonic acid, the primary agent of chemical weathering is produced by ___.
A)
carbon dioxide dissolving in rainwater done
clear
B)
plant roots done
clear
C)
bacteria that feed on plant and animal remains done
clear
D)
All of the above done
clear
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question_answer70)
As a rock breaks into smaller pieces, the surface area to volume ratio ________.
A)
increases done
clear
B)
decreases done
clear
C)
stays the same done
clear
D)
can increase or decrease depending on the size of the pieces done
clear
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question_answer71)
What is the term geologist?s use for the layer of loose, heterogeneous weathered material lying on top of the bedrock?
A)
Humus done
clear
B)
Laterite done
clear
C)
Regolith done
clear
D)
Soil done
clear
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question_answer72)
Which of the following farming practices helps to prevent the erosion of topsoil?
A)
Ploughing a field perpendicular to the contour lines. done
clear
B)
Ploughing a field parallel to the contour lines. done
clear
C)
Ploughing a field in the direction that the water drains. done
clear
D)
None of these will help to prevent soil erosion. done
clear
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question_answer73)
Which of the following statements is correct?
A)
Both loamy and clayey soil are suitable for growing wheat and gram. done
clear
B)
For growing paddy we need a soil that is rich in clay, organic matter and has a good capacity to retain water. done
clear
C)
For pulses loamy soils that drain water easily are considered best. done
clear
D)
For cotton, sandy-loam soil is the best. done
clear
View Solution play_arrow
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question_answer74)
Which of the following organisms contribute to soil formation?
A)
Fungi done
clear
B)
Earthworm done
clear
C)
Bacteria done
clear
D)
All of the above done
clear
View Solution play_arrow
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question_answer75)
Which of the following cause soil pollution?
A)
Insecticides done
clear
B)
Fertilizers done
clear
C)
Manure done
clear
D)
Both (a) and (b) done
clear
View Solution play_arrow
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question_answer76)
The unweathered rock in soil profile is
A)
Parent rock done
clear
B)
D-horizon done
clear
C)
Bedrock done
clear
D)
All of the above done
clear
View Solution play_arrow
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question_answer77)
Which of the following is not eco-friendly?
A)
wood done
clear
B)
plastic done
clear
C)
paper done
clear
D)
All of the above done
clear
View Solution play_arrow
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question_answer78)
The soil with particle size of 0.2 mm to 2.0 mm.
A)
silt done
clear
B)
gravel done
clear
C)
sandy soil done
clear
D)
clayey soil done
clear
View Solution play_arrow
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question_answer79)
Which one of the following is a cause of soil erosion?
A)
Heavy rain done
clear
B)
Drought done
clear
C)
Overgrazing done
clear
D)
All of the above done
clear
View Solution play_arrow
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question_answer80)
The soil which is formed by the deposition of silt is
A)
Alluvial soil done
clear
B)
Red soil done
clear
C)
Black soil done
clear
D)
Laterite soil done
clear
View Solution play_arrow
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question_answer81)
DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.
Column - I | Column - II |
(A) A home for living organisms | (p) Lesser amount of humus |
(B) Middle layer of the soil | (q) Pots and toys |
(C) Cotton | (r) All kinds of soil |
(D) Clayey soil | (s) Sandy loam soil |
A)
(A) \[\to \] (r), (B) \[\to \] (p), (C) \[\to \] (s), (D) \[\to \] (q) done
clear
B)
(A) \[\to \] (q), (B) \[\to \] (s), (C) \[\to \] (p), (D) \[\to \] (r) done
clear
C)
(A) \[\to \] (p), (B) \[\to \] (r), (C) \[\to \] (s), (D) \[\to \] (q) done
clear
D)
(A) \[\to \] (r), (B) \[\to \] (p), (C) \[\to \] (q), (D) \[\to \] (s) done
clear
View Solution play_arrow
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question_answer82)
DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.
Column - I | Column - II |
(A) Black soil | (p) Regar |
(B) Red soil | (q) Superbly fertile |
(C) Alluvial soil | (r) Highest humus content |
(D) Mountain soil | (s) Iron oxide |
A)
(A) \[\to \] (p), (B) \[\to \] (s), (C) \[\to \] (q), (D) \[\to \] (r) done
clear
B)
(A) \[\to \] (p), (B) \[\to \] (s), (C) \[\to \] (r), (D) \[\to \] (q) done
clear
C)
(A) \[\to \] (p), (B) \[\to \] (s), (C) \[\to \] (r), (D) \[\to \] (q) done
clear
D)
(A) \[\to \] (q), (B) \[\to \] (s), (C) \[\to \] (r), (D) \[\to \] (p) done
clear
View Solution play_arrow
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question_answer83)
DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.
Column - I | Column - II |
(A) Red soil | (p) Himalayan region |
(B) Black soil | (q) Rajasthan, Gujarat |
(C) Mountain soil | (r) Maharashtra, M.P., Tamil Nadu |
(D) Alluvial soil | (s) Kerala, Karnataka |
A)
(A) \[\to \] (s), (B) \[\to \] (r), (C) \[\to \] (p), (D) \[\to \] (q) done
clear
B)
(A) \[\to \] (q), (B) \[\to \] (r), (C) \[\to \] (p), (D) \[\to \] (s) done
clear
C)
(A) \[\to \] (s), (B) \[\to \] (p), (C) \[\to \] (r), (D) \[\to \] (q) done
clear
D)
(A) \[\to \] (s), (B) \[\to \] (r), (C) \[\to \] (q), (D) \[\to \] (p) done
clear
View Solution play_arrow
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question_answer84)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 Soil was dug from the garden and dissolved in water (about 500 ml) taken in a beaker. The beaker was shaken vigorously for about a minute and then kept undisturbed. After sometime the soil settles down and different components present in the soil (i.e. sand, clay, humus, gravel and silt) formed different layers as shown in figure.
Layer represented by (D) in the figure is of:
A)
gravel done
clear
B)
sand done
clear
C)
clay done
clear
D)
humus done
clear
View Solution play_arrow
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question_answer85)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 Soil was dug from the garden and dissolved in water (about 500 ml) taken in a beaker. The beaker was shaken vigorously for about a minute and then kept undisturbed. After sometime the soil settles down and different components present in the soil (i.e. sand, clay, humus, gravel and silt) formed different layers as shown in figure.
Layer represented by (B) is of:
A)
gravel done
clear
B)
sand done
clear
C)
clay done
clear
D)
silt done
clear
View Solution play_arrow
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question_answer86)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 Soil was dug from the garden and dissolved in water (about 500 ml) taken in a beaker. The beaker was shaken vigorously for about a minute and then kept undisturbed. After sometime the soil settles down and different components present in the soil (i.e. sand, clay, humus, gravel and silt) formed different layers as shown in figure.
Layer represented by (A) is:
A)
gravel done
clear
B)
sand done
clear
C)
clay done
clear
D)
silt done
clear
View Solution play_arrow
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question_answer87)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 Weigh 100g of soil and place it on a newspaper in the sun to dry for about 2 hours. Do not allow any soil to spill from the newspaper. After drying it, weigh the soil and let the weight of soil (dry) is x g. Which of the following statements is correct in terms of soil moisture?
A)
Soil holds water in it which is called soil moisture done
clear
B)
Loss of weight of soil on drying is called soil moisture. done
clear
C)
Initial weight of soil is called soil moisture. done
clear
D)
Final weight of the soil is called soil moisture done
clear
View Solution play_arrow
-
question_answer88)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 Weigh 100g of soil and place it on a newspaper in the sun to dry for about 2 hours. Do not allow any soil to spill from the newspaper. After drying it, weigh the soil and let the weight of soil (dry) is x g. How much was the soil moisture present in this sample of soil?
A)
100g done
clear
B)
x g done
clear
C)
(100-x)g done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer89)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 Weigh 100g of soil and place it on a newspaper in the sun to dry for about 2 hours. Do not allow any soil to spill from the newspaper. After drying it, weigh the soil and let the weight of soil (dry) is x g. What is the % age of moisture in this sample of soil?
A)
x% done
clear
B)
(100-x)% done
clear
C)
\[\frac{100}{x}%\] done
clear
D)
\[\frac{x}{100}%\] done
clear
View Solution play_arrow
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question_answer90)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 3 Water when allowed to percolate through a loamy soil, took 20 minutes for 400 mL of water to percolate. Different soils have different percolation rates. Percolation rate of sandy soil is faster as compared to clayey soil. The rate of percolation is:
A)
10mL/min done
clear
B)
20mL/min done
clear
C)
5mL/min done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer91)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 3 Water when allowed to percolate through a loamy soil, took 20 minutes for 400 mL of water to percolate. Different soils have different percolation rates. Percolation rate of sandy soil is faster as compared to clayey soil. Loamy soil contains __________
A)
sand, clay and silt done
clear
B)
sand, humus and rock done
clear
C)
sand, humus and silt done
clear
D)
sand, clay and rock done
clear
View Solution play_arrow
-
question_answer92)
DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 3 Water when allowed to percolate through a loamy soil, took 20 minutes for 400 mL of water to percolate. Different soils have different percolation rates. Percolation rate of sandy soil is faster as compared to clayey soil. Which of the following is the correct order for percolation rate?
A)
Sandy soil < Clayey soil < Loamy soil done
clear
B)
Clayey soil > Sandy soil > Loamy soil done
clear
C)
Sandy soil > Clayey soil > Loamy soil done
clear
D)
Loamy soil > Clayey soil > Sandy soil done
clear
View Solution play_arrow
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question_answer93)
DIRECTIONS: The questions in this segment consists of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Soil is formed by weathering of rocks. Reason (R): The process of breaking down of rocks by the action of wind, water and climate is called weathering.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer94)
DIRECTIONS: The questions in this segment consists of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Middle layer of the soil is harder and more compact. Reason (R): The layer below middle layer is called bed rock.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer95)
DIRECTIONS: The questions in this segment consists of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Different types of soil are needed to cultivate different types of crops. Reason (R): Clayey soil is used to make statues.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer96)
DIRECTIONS: The questions in this segment consists of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Red soil in India is mainly found in me interior regions of Kerala and Tamil Nadu, Southern Karnataka and Madhya Pradesh. Reason (R): The red colour of this soil is due to the presence of iron oxide in it.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer97)
DIRECTIONS: The questions in this segment consists of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Mountain soil is very fertile. Reason (R): Mountain soil have similar composition at different places.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer98)
DIRECTIONS: Read the following three statements carefully and choose the correct option. (i) Erosion of soil is more severe in areas of high vegetation. (ii) Polythene and plastic bags pollute the soil and also kill the organisms living in the soil. (iii) Discharge of waste products by chemical factories does not cause soil pollution.
A)
Statement (i) and (iii) are incorrect while statement (ii) is correct. done
clear
B)
Statement (i) and (ii) are incorrect while (iii) is correct. done
clear
C)
All the statements are correct. done
clear
D)
All the statements are incorrect. done
clear
View Solution play_arrow
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question_answer99)
DIRECTIONS: Read the following three statements carefully and choose the correct option. (i) Tea, coffee grow very well in sandy soil. (ii) Capacity to hold water is much in sandy soil than clayey soil. (iii) Clayey soil has poor air circulation.
A)
Statement (i) and (iii) are incorrect while statement (ii) is correct. done
clear
B)
Statement (i) and (ii) are incorrect while (iii) is correct. done
clear
C)
All the statements are correct. done
clear
D)
All the statements are incorrect. done
clear
View Solution play_arrow
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question_answer100)
DIRECTIONS: On the basis of following diagram/picture answer the questions given below:
Which part in the given figure contains cracks and crevices?
A)
(i) done
clear
B)
(ii) done
clear
C)
(iii) done
clear
D)
(iv) done
clear
View Solution play_arrow
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question_answer101)
DIRECTIONS: On the basis of following diagram/picture answer the questions given below:
"It is dark in colour and rich in humus". The above statement is true for which layer in the given figure?
A)
(ii) done
clear
B)
(iv) done
clear
C)
(iii) done
clear
D)
(i) done
clear
View Solution play_arrow
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question_answer102)
DIRECTIONS: On the basis of following diagram/picture answer the questions given below:
Which of the following layer consists of unweathered rocks?
A)
(iv) done
clear
B)
(i) done
clear
C)
(ii) done
clear
D)
(iii) done
clear
View Solution play_arrow