Soil Questions

We provide soil practice exercises, instructions, and a learning material that allows learners to study outside of the classroom. We focus on soil skills mastery so, below you will get all questions that are also asking in the competition exam beside that classroom.

Soil Questions

List of soil Questions

Question NoQuestionsClass
1Which of the following is not correctly matched?
A. Laterite- Contains aluminium
B. Terra Rosa- Most suitable for roses
c. chernozem- Richest soil
D. Black cotton soil- Rich in calcium carbonate
7
2The plant, Ziziphus rotundifolia is an
indicator of
A. Sandy loam soil
B. Highlime soil
c. Soil formation
D. Soil erosion
7
3The process of mineralisation by microorganisms helps in the release of
A. Inorganic nutrients from humus
B. Both organic and inorganic nutrients from detritus
c. organic nutrients from humus
D. Inorganic nutrients from detritus and formation of humus
7
4Soil which is carried by air, known as
A. Alluvial
B. Colluvial
c. Eolian
D. Glacial
7
5The soil near the surface is usually darker, than the soil about one meter down. This is because the topsoil is
A. Young and wet
B. Richer in organic matter
c. Richer in Ca and Mg
D. Dry
7
6Salinity of the soil is often caused due
to
A. Accumulation of soluble minerals near or in the surface in arid region
B. Excessive addition of water
C. Rapid evaporation of surface water
D. Excessive leaching
7
7The rotting dead matter in the soil is called as
A. Decomposition
B. Humus
c. Petrification
D. Minerals
7
8Column I represent the size of the soil
particles and Column I represents type of solid components. Which of the following is correct match for the Column I and
Column II.
Column I
A. 0.2 to ( 2.00 mathrm{mm} )
(i) Slit
B. Less than 0.002 ( mathrm{mm} )
(ii) Clay
[
begin{array}{l}
text { C. } 0.02 text { to } 0.2 mathrm{mm} \
text { m }
end{array}
]
(iii) Coarse and particle
D. 0.002 to ( 0.02 mathrm{mm} )
(iv) Fine sand particle
B. (A) – (iv), (B) – (i), (C) – (iii), (D) – (ii)
c. (A) – (iii), (B) – (ii), (C)-(iv), (D) – (i)
D. None of the above
7
9Nature and properties of soil depends
upon
A. climate
B. weathering process
c. development of soil
D. all of these
7
10What is best pH of soil for cultivation?
A. 3.4 to 5.44
B. 5 to 5.5
c. 5.5 to 6.5
D. 6.5 to 7.5
7
11Soil rich in Fe and Al due to excessice
leaching is
A. Alluvial
B. Laterite
c. Loam
D. Both A and B
7
12Percolation tank is constructed to
impound
A. Runoff water
B. Water vapour
c. Purified water
D. None of the above
7
13Colour of black soil is due to
A. Iron, Aluminium, Humus content
B. Presence of zinc, Sulphur, Potassium content
C. Litter content
D. All of the above
7
14In which one of the following pairs, is the specific characteristic of a soil not
correctly matched?
A. Chernozems – Richest soil in the world.
B. Black soil-Rich in calcium carbonate and iron
c. Laterite – contains aluminium compound.
D. Terra rossa – Most suitable for roses
7
15Deep black soil is considered to be
highly productive due to high proportion of
A. silt and earthworm
B. Clay and humus
c. Gravel and ( mathrm{Ca}^{2} )
D. sand and ( z n^{2+} )
7
16The type of soil which can hold water for more time have
A. Lower percolation rate
B. Higher percolation rate
c. Intermediate percolation rate
D. None of the above
7
17Which one of the following pair of soil and its specific characteristic is incorrectly matched?
A. Terrarossa- most suitable for rose cultivation
B. Chernozems- richest soil on the planet
c. Black soil- rich in calcium carbonate
D. Laterite- contain aluminium compounds
7
18Most economical and effective method
to control pH of the soil is
( A cdot operatorname{cac} O_{3} )
( mathbf{B} cdot operatorname{Ca}(O H)_{2} )
c. ( operatorname{cacl}_{2} )
D. ( operatorname{ca}left(N O_{3}right)_{2} )
7
19An artificially created surface water body to recharge ground water is called
as
A. Dam
B. well
c. Percolation tank
D. None of the above
7
20Surahi and Matki are made from
A. Sandy soil
B. Loamy soil
c. Black soil
D. silt
7
21Which is best for plant growth?
A. Loamy soil
B. silt
c. sandy soil
D. Clay soil
7
22Edaphology is connected with
A. Plant and biosphere
B. Soil and living microorganisms
C. Animals and ecosystem
D. Soil and biosphere
7
23Percolation tank is a sustainable
development for
A. Soil conservation
B. Solid waste management
c. water conservation
D. None of the above
7
24Amount of water a soil can hold against the pull of gravity is known as
A. Hygroscopic water
B. Storage capacity
c. Gravitational water
D. Field capacity
7
25Why is organic matter (humus) an
important part of soil?
A. It helps to improve water infiltration
B. It can break down organic pollutants
C. It converts nitrogen in the air into nitrates used by plants
D. It is rich in nutrients, which is important for fertility
7
26Which of the following present in the soil is most helpful to the growth of plants?
A. Humus
B. Sand
c. clay
D. small porous rocks
7
27Prolonged liberal irrigation of agriculture fields is likely to create the problem of
A . Acidity
B. Aridity
c. salinity
D. Metal toxicity
7
28Soil suitable for cultivation of tobacco,
vegetables and paddy
A. Black soil
B. Red soil
c. Alluvial soil
D. All of the above
7
29Deep black soils are considered highly productive because of their high proportion of
A. Clay and Humus
B. Sand and Zinc
c. Gravel and Calcium
D. silt and Earthworm
7
30Edaphology is the relationship between
A. Plant and biosphere
B. Animal and ecosystem
c. Soil and living organisms
D. Soil and biosphere
7
31is a mixture of loamy and yellow soils.
A. Red soil
B. Black soil
c. Alluvial soil
D. None of the above
7
32Water infiltration will be slowest in
A. Black cotton soil
B. Sandy soil
c. Red soil
D. Loamy soil
7
33( mathrm{X}^{prime} ) is an organic substance obtained from the decomposition of plant or animals wastes which provides lots of humus to the soil. Identify the incorrect statements regarding decomposition.
A. It makes the soil porous
B. It reduces the water holding capacity of the soil
c. it increase the number of friendly microbes
D. It improves the texture of the soil
7
34Clay has ( _{–} ) permeability and porosity.
A. High – high
B. High – low
c. Low – high
D. Low – low
7
35Clay soil is obtained
A. In desert
B. Around ponds
c. on seashore
D. on rocks
7
36The water content of soil is defined as
the ratio of
A. Volume of water to volume of voids in soil
B. Volume of water to volume of given soil
C. Weight of water to weight of solids of given mass of soil
D. Weight of water to weight of air in voids
7
37The soil near the surface is usually
darker than about one meter down, this
is because the top soil
A. Is richer in Ca and Mg
B. Contains more organic matter
C. Is wetter than the sub soil
D. Is drier than the sub soil
7
38Formula of rate of percolation is
A ( cdot ) Percolation rate ( (mathrm{mL} / mathrm{min})=frac{text {amount of water}(mathrm{mL})}{text {percolation time}(min )} )
B. ( quad ) Percolation rate ( (mathrm{mL} / mathrm{min})=frac{text {percolation time}(min )}{text {amount of water}(mathrm{mL})} )
C. Both A and B
D. None of these
7
39The lower percolation rate refers that the soil
A. Can hold water for less time
B. Can hold water for more time
c. cannot hold water
D. None of the above
7
40Which of the following present in the soil is most helpful to the growth of plants?
A . Gravel
B. Humus
c. sand
D. silt
7
41What is pH? What is its range? What
are the negative impacts if the pH of
soil is too low or too high?
7
42In which one of the following pairs is the specific characteristic of a soil not
correctly matched?
A. Laterite – contains aluminium compound
B. Terra rossa – most suitable for roses
c. chernozems – richest soil in the world
D. Black soil- rich in calcium carbonate
7
43Physical and chemical conditions of soil are studied under ….. factors.
A. Biotic
B. Climatic
c. Edaphic
D. Topographic
7
44What is the best pH of the soil for cultivation of plants?
A . ( 3.5-5 )
B. 6.5 – 7
c. ( 4.5-8 )
D. 5.5 – 7
7
45Soil carried by gravity is
A. Alluvial
B. Colluvial
c. Elluvial
D. Glacial
7
46The top soil is darker
and
A. Is drier than subsoil
B. Is richer in ( mathrm{Na} ) and ( mathrm{Mg} )
C. Is wetter than subsoil
D. Contains more organic matter
7
47The depth of the percolation tank is limited to the ( ldots ) the height between bed level and full storage level.
A . Half
B. One fourth
c. one third
D. Same
7
48Alluvial soils in India are
A. Found in desert
B. Least fertile
c. Very rare
D. Most extensive soils
7
49The size of clay particle is less than
A. ( 0.02 mathrm{mm} )
B. 0.002 mm
( c cdot 0.2 mathrm{mm} )
D. 2.0 mm
7
50soils tend to be light, well aerated and rather dry.
A. Red soil
B. Black soil
c. sandy soil
D. Clayey soil
7
51Which one is the most suitable soil for
the growth of plants?
A. Sandy soil
B. Loamy Soil
c. silty soil
D. Clayey soil
7
52Razia conducted an experiment in the
field related to the rate of percolation. She observed that it took 40 min for 200
mL of water to percolate through the soil sample. Calculate the rate of
percolation.
7
53A good soil is that which
A. Holds whole of the water entering into it
B. Allows limited amount of water into it
C. Allows the water to percolate slowly into it
D. Allows the water to pass very quickly from it
7
54Assertion
Sandy areas have a wide range of daily
temperature.
Reason
Sand soil particles are good conductors
of heat.
( A . ) If ( A ) and ( R ) both are true and ( R ) is correct explanation of
( A )
B. If ( A ) and ( R ) both are true but ( R ) is not correct explanation of ( mathrm{A} )
C. If ( A ) is correct and ( R ) is wrong.
D. If A is wrong and R is true.
7
55is a mixture of sand and clay.
A . clay
в. Humus
c. silt
D. Loam
7
56Which of the following provides nutrients and makes the soil fertile?
A . Gravel
B. Humus
c. clay
D. Loam
7
57Assertion
In tropical rainforest 0 horizon and ( A ) horizon of soil profile are shallow and
nutrient poor
Reason
Excessive growth of micro organism in soil depletes its organic content
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
7
58Deep black soil is considered to be
highly productive due to high proportion of
A. silt and earthworm
B. Clay and humus
c. Gravel and Catt
D. sand and zn
7
59Which of the following is not a characteristic of humus?
A. It is rich in organic matter such as lignin and cellulose
B. It is colloidal in nature and serves as a reservoir of
nutrients
C. It is highly resistant to microbial action and undergoes slow decomposition
D. It is further degraded by the process of humification
7
60Soil formed after leaching and rich in ( A ) and Fe is
A. Alluvial
B. Podosol
c. Laterite
D. None of the above
7
61Assertion
Podzol is a highly leached soil and acidic in reaction.
Reason
Excessive moisture content of
podzolized soils promotes leaching of the soil
A. If ( A ) and ( R ) both are true and ( R ) is correct explanation of
( A )
B. If A and R both are true but R is not correct explanation of A.
C. If A is correct and R is wrong.
D. If A is wrong and R is true
7
62Which of the following soil is transported by wind?
A. Alluvial
B. Aerial
c. Eolian
D. Glacial
7
63Percolation tank is
A. Earthen dam
B. Concrete dam
C. Woody dam
D. None of the above
7
64Match the columns of size with soil
particles
begin{tabular}{lll|l}
& Column 1 (size) & multicolumn{2}{c} { Column 2 (soil particle) } \
a. & 0.2- 2.00 ( mathrm{mm} ) & (i) & Silt \
b. & Less than 0.002 ( mathrm{mm} ) & (ii) & Clay \
c. & 0.02 – 0.2 ( mathrm{mm} ) & (iii) & Coarse sand particles \
d. & ( 0.02-0.02 ) ( mathrm{mm} ) & (iv) & Fine sand particles
end{tabular}
B. a- iii, b- ii, c- iv, d-i
c. a- ii, b- iii, c- iv, d-i
D. None of the above
7
65An area of soil is thoroughly wetted and allowed to drain until capillary movement of water stopped. The water contents of the soil will give an
estimate of its
A. Capillary water
B. Storage water
c. Field capacity
D. Gravitational water
7
66Why are earthworms important in soils?
A. Earthworms are segmented which means that they cause more caverns for other bacteria
and microbes to be present underground
B. Earthworms produce fluids which enrich the soil aiding for nitrogen to be present for plant
growth
C. Earthworms inhibit gaseous exchange killing other bacteria which can be harmful to plants
D. Earthworms ingest soil and excrete soil which allows for some chemicals to be
7
67The principal cation in alkaline soil is
A . Na
B. ( kappa^{-} )
( c cdot c a^{2} )
D. Any of the above
7
68Which of the following makes the Venaparthy an area free from water
crisis?
A. Percolation tank
B. Green mufflers
c. Afforestation
D. None of the above
7
69Which of the following characteristics is not a function of humus in soil?
A. Provides nutrients
B. Raises pH
c. Retains moisture
D. Humus does all of the above in soil
7
70lime is added to the soil, when it is too
A. Sandy
B. Salty
c. Alkaline
D. Acidic
7
71Venaparthy has increased groundwater
level by adopting
A. Percolation tank
B. Cropping pattern
c. Biofertilizers
D. Rainwater harvesting system
7
72Define capillary water, hydroscopic water and combined water.7
73Solve the following crossword puzzle with the clues given. Across:
2. Plantation prevents it.
5. Use should be banned to avoid soil
pollution.
6. Type of soil used for making pottery.
7. Living organism in the soil
Down:
1. In desert soil erosion occurs through.
2. Clay and loam are suitable for cereals
like.
3. This type of soil can hold very little
water
4. Collective name for layers of soil.
7
74Soil hold water in it, it is called as
A. Soil water
B. Ground water
c. Soil moisture
D. None of the above
7
75helps in maintaining the supply of nutrients to the growing plants.
A . Herbivores
B. Carnivores
c. Decomposers
D. Omnivores
7

Hope you will like above questions on soil and follow us on social network to get more knowledge with us. If you have any question or answer on above soil questions, comments us in comment box.

Stay in touch. Ask Questions.
Lean on us for help, strategies and expertise.

Leave a Reply

Your email address will not be published. Required fields are marked *