Soil Science 3
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Question No. 1
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Which of the following minerals is a source of phosphorus for plants?
A.
Biotite
B.
Apatite
C.
Tourmaline
D.
Pyrolusite
Question No. 2
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Which of the following minerals is a source of potassium for plants?
A.
Biotite
B.
Tourmaline
C.
Anorthite
D.
Pyrolusite
Question No. 3
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Which of the following minerals is a source of magnesium for plants?
A.
Dolomite
B.
Olivine
C.
Tourmaline
D.
Anorthite
Question No. 4
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Which of the following minerals is a source of boron for plants?
A.
Biotite
B.
Tourmaline
C.
Anorthite
D.
Pyrolusite
Question No. 5
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Which of the following is most resistant to weathering?
A.
Quartz
B.
Muscovite
C.
Feldspar
D.
Biotite
Question No. 6
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Which of the following minerals is the most abundant in Earth's crust?
A.
Oxygen
B.
Magnesium
C.
Calcium
D.
Silicon
Question No. 7
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Which of the following minerals has a tetrahedral Si sheet and octahedral Al sheet structure?
A.
Montmorillonite
B.
Kaolinite
C.
Illite
D.
Vermiculite
Question No. 8
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Which of the following is true about montmorillonite?
A.
It is a non-expanding type of clay mineral.
B.
It is highly expansive and is a part of the smectite group.
C.
It has the highest CEC among all clay minerals.
D.
It is non-plastic in nature.
Question No. 9
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Which mineral is a hydrated silicate of magnesium?
A.
Serpentine
B.
Olivine
C.
Tourmaline
D.
Pyrolusite
Question No. 10
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Which silicate mineral has the highest cation exchange capacity (CEC)?
A.
Illite
B.
Kaolinite
C.
Montmorillonite
D.
Vermiculite
Question No. 11
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Which of the following clay minerals is classified as non-expanding?
A.
Montmorillonite
B.
Vermiculite
C.
Kaolinite
D.
Illite
Question No. 12
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Which of the following is the correct order of resistance to weathering from highest to lowest?
A.
Quartz > Muscovite > Feldspar > Biotite > Calcite
B.
Quartz > Feldspar > Muscovite > Biotite > Calcite
C.
Quartz > Biotite > Muscovite > Feldspar > Calcite
D.
Muscovite > Quartz > Feldspar > Biotite > Calcite
Question No. 13
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Which of the following silicate clays has the highest surface area?
A.
Kaolinite
B.
Montmorillonite
C.
Vermiculite
D.
Illite
Question No. 14
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Which type of silicate clays are characterized by having one tetrahedral Si sheet and one octahedral Al sheet?
A.
2:1 type
B.
1:1 type
C.
2:1:1 type
D.
None of the above
Question No. 15
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Which of the following minerals has the lowest surface area among the silicate clays?
A.
Vermiculite
B.
Kaolinite
C.
Montmorillonite
D.
Illite
Question No. 16
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Which of the following is true about phyllosilicate clays?
A.
They contain only tetrahedral sheets of silica.
B.
They contain alternating tetrahedral and octahedral sheets of silica and alumina.
C.
They are composed only of octahedral sheets of alumina.
D.
They are all expansive in nature.
Question No. 17
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Which mineral is most associated with magnesium in soils?
A.
Olivine
B.
Anorthite
C.
Tourmaline
D.
Biotite
Question No. 18
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Which of the following minerals is classified as a 2:1:1 type silicate clay?
A.
Montmorillonite
B.
Chlorite
C.
Kaolinite
D.
Illite
Question No. 19
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Which of the following is the primary feature of 2:2 silicate clays?
A.
They have one Al sheet sandwiched between two Si sheets.
B.
They have two Mg-dominated alumina sheets sandwiched between two Si sheets.
C.
They contain one tetrahedral sheet and one octahedral sheet.
D.
They are highly expansive.
Question No. 20
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What is the smallest unit of the soil classification system?
A.
Soil order
B.
Soil family
C.
Soil sub-group
D.
Soil series
Question No. 21
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Which of the following clay minerals is found in both sand and silt soils?
A.
Muscovite
B.
Illite
C.
Vermiculite
D.
Kaolinite
Question No. 22
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Which silicate clay mineral has the highest CEC (Cation Exchange Capacity)?
A.
Kaolinite
B.
Vermiculite
C.
Montmorillonite
D.
Illite
Question No. 23
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Which of the following clay minerals is most associated with the highest negative charges?
A.
Vermiculite
B.
Kaolinite
C.
Illite
D.
Montmorillonite
Question No. 24
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Which mineral is commonly used as a source of calcium for plants?
A.
Anorthite
B.
Olivine
C.
Tourmaline
D.
Biotite
Question No. 25
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Which of the following clay minerals is non-expanding in nature?
A.
Illite
B.
Vermiculite
C.
Montmorillonite
D.
Kaolinite
Question No. 26
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Which of the following is true about chlorite-type silicate clays?
A.
They are highly expansive.
B.
They contain two tetrahedral sheets and two octahedral Al sheets.
C.
They contain only one tetrahedral sheet and one octahedral sheet.
D.
They are found in sandy soils.
Question No. 27
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Which of the following silicate clays is found in clay soils?
A.
Vermiculite
B.
Montmorillonite
C.
Illite
D.
Muscovite
Question No. 28
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Which of the following minerals has the highest total surface area?
A.
Vermiculite
B.
Kaolinite
C.
Illite
D.
Montmorillonite
Question No. 29
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Which of the following soil classification system features is based on soil properties?
A.
Soil texture
B.
Soil genesis
C.
Soil morphology
D.
Soil color
Question No. 30
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Which of the following is an expanding type silicate mineral?
A.
Illite
B.
Vermiculite
C.
Muscovite
D.
Biotite
Question No. 31
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Which of the following minerals is a major component of the Earth’s crust, alongside oxygen and silicon?
A.
Aluminum
B.
Iron
C.
Calcium
D.
Magnesium
Question No. 32
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Which of the following has the highest degree of swelling among expanding clays?
A.
Vermiculite
B.
Illite
C.
Montmorillonite
D.
Kaolinite
Question No. 33
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Which of the following is true about the 1:1 type silicate clays?
A.
They contain two tetrahedral sheets to one octahedral Al sheet.
B.
They have one tetrahedral Si sheet to one octahedral Al sheet.
C.
They are highly expansive.
D.
They have an extra layer of magnesium-dominated alumina sheet.
Question No. 34
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Which of the following minerals is a source of calcium for plants?
A.
Olivine
B.
Dolomite
C.
Biotite
D.
Anorthite
Question No. 35
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Which of the following silicate minerals has the lowest cohesion and plasticity?
A.
Muscovite
B.
Vermiculite
C.
Kaolinite
D.
Montmorillonite
Question No. 36
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Which of the following minerals has a formula of (Fe,Mg)2SiO4?
A.
Olivine
B.
Tourmaline
C.
Serpentine
D.
Muscovite
Question No. 37
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Which of the following is a non-expanding type of clay mineral?
A.
Kaolinite
B.
Vermiculite
C.
Montmorillonite
D.
Illite
Question No. 38
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Which of the following is true about vermiculite?
A.
It has low cation exchange capacity.
B.
It has high negative charges and a high cation exchange capacity.
C.
It is a non-expanding clay mineral.
D.
It is found in sand and silt soils.
Question No. 39
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Which mineral has the formula (CaAl2Si2O8) and is a source of calcium?
A.
Dolomite
B.
Anorthite
C.
Olivine
D.
Biotite
Question No. 40
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Which of the following has the highest plasticity and swelling ability?
A.
Montmorillonite
B.
Vermiculite
C.
Kaolinite
D.
Illite
Question No. 41
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Which of the following minerals is a source of molybdenum for plants?
A.
Olivine
B.
Pyrolusite
C.
Tourmaline
D.
Anorthite
Question No. 42
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Which of the following clay minerals is part of the smectite group?
A.
Kaolinite
B.
Montmorillonite
C.
Vermiculite
D.
Illite
Question No. 43
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Which of the following is true about the structure of phyllosilicates?
A.
They consist of a single tetrahedral sheet.
B.
They consist of alternating tetrahedral and octahedral sheets.
C.
They are entirely composed of octahedral sheets.
D.
They have a simple linear structure.
Question No. 44
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Which of the following has the highest total surface area among clay minerals?
A.
Kaolinite
B.
Montmorillonite
C.
Vermiculite
D.
Illite
Question No. 45
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Which of the following minerals is a silicate that contains boron?
A.
Tourmaline
B.
Pyrolusite
C.
Anorthite
D.
Dolomite
Question No. 46
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Which of the following is a property of 2:1 type silicate clays?
A.
They have one tetrahedral Si sheet and one octahedral Al sheet.
B.
They have two tetrahedral Si sheets and one octahedral Al sheet.
C.
They contain extra Mg-dominated alumina sheets.
D.
They are non-expanding.
Question No. 47
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Which of the following is the most common source of potassium in soil?
A.
Biotite
B.
Pyrolusite
C.
Tourmaline
D.
Dolomite
Question No. 48
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Which of the following clay minerals has the highest degree of expansion?
A.
Vermiculite
B.
Illite
C.
Montmorillonite
D.
Kaolinite
Question No. 49
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Which mineral is primarily composed of the chemical formula Mg2SiO4?
A.
Olivine
B.
Anorthite
C.
Muscovite
D.
Biotite
Question No. 50
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Which of the following silicate minerals is a non-expanding type and is found in clay soils?
A.
Vermiculite
B.
Kaolinite
C.
Muscovite
D.
Montmorillonite
Question No. 51
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Time
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Which of the following has the highest CEC (Cation Exchange Capacity) among silicate clays?
A.
Illite
B.
Vermiculite
C.
Kaolinite
D.
Montmorillonite
Question No. 52
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Which of the following minerals is a major source of iron in the Earth's crust?
A.
Olivine
B.
Tourmaline
C.
Pyrolusite
D.
Anorthite
Question No. 53
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Which of the following is true about the 2:2 type silicate clays?
A.
They consist of one tetrahedral sheet sandwiched between two octahedral sheets.
B.
They contain two tetrahedral Si sheets and two Mg-dominated alumina sheets.
C.
They are highly expansive.
D.
They consist of two Al sheets sandwiched between one Si sheet.
Question No. 54
Marks
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Time
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Which of the following is a source of magnesium for plants?
A.
Olivine
B.
Kaolinite
C.
Biotite
D.
Tourmaline
Question No. 55
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Which of the following silicate clays is most commonly associated with limited expansion?
A.
Montmorillonite
B.
Illite
C.
Vermiculite
D.
Chlorite
Question No. 56
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Which of the following minerals is a source of aluminum for plants?
A.
Tourmaline
B.
Pyrolusite
C.
Anorthite
D.
Biotite
Question No. 57
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Which of the following has the least amount of surface area among the listed clay minerals?
A.
Montmorillonite
B.
Illite
C.
Vermiculite
D.
Kaolinite
Question No. 58
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Which of the following is the smallest unit of the modern soil classification system?
A.
Soil family
B.
Soil sub-group
C.
Soil series
D.
Soil order
Question No. 59
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Which of the following minerals is an alumina-silicate that does not expand?
A.
Vermiculite
B.
Illite
C.
Muscovite
D.
Montmorillonite
Question No. 60
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Which mineral is a source of calcium and magnesium for plants?
A.
Anorthite
B.
Olivine
C.
Dolomite
D.
Pyrolusite
Question No. 61
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Time
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Which of the following clay minerals has the highest degree of swelling?
A.
Vermiculite
B.
Illite
C.
Montmorillonite
D.
Kaolinite
Question No. 62
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Time
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Which of the following is true about 1:1 type silicate clays like Kaolinite?
A.
They contain two tetrahedral Si sheets and one octahedral Al sheet.
B.
They have a simple structure with one tetrahedral Si sheet and one octahedral Al sheet.
C.
They are highly expansive.
D.
They contain extra magnesium sheets between Si sheets.
Question No. 63
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Which of the following is an example of a 2:1 type mineral?
A.
Kaolinite
B.
Chlorite
C.
Vermiculite
D.
Muscovite
Question No. 64
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Which of the following silicate clays is least likely to expand in nature?
A.
Montmorillonite
B.
Vermiculite
C.
Illite
D.
Kaolinite
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