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Soil Science (PACE)
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Q.1
Apical oxygen means____?
Ionic form
Unshared
Non-polar
None of these
(B)
Q.2
Basal oxygen means____?
Shared
Covalent bonding
Transferred
None of these
(A)
Q.3
Mineral is _____?
Organic substance
Inorganic substance
Metallic
None of these
(B)
Q.4
Process of mixing soil by fauna & Hora ?
Lessivage
Pedoturbation
Leaching
Enrichment
(B)
Q.5
Which is physical property of soil?
Hydration
Oxidation
Reduction
None of these
(D)
Q.6
Size of the individual soil particles?
Texture
Porosity
Structure
Bulk density
(A)
Q.7
Which silica mineral is present in soil in abundant quantity?
Quartz
NaCl
Smectite
Gypsum
(A)
Q.8
Attraction b/w similar particles are called.
Adhesion
Vander wall
Cohesion
All of these
(C)
Q.9
Permanent charge is due to
Ionic bonding
Covalent bonding
ph change
Isomorphic substitution
(D)
Q.10
Size of clay
<0.2 um
>0.2 um
<0.10 um
All of these
(A)
Q.11
Which element can be fixed by smecitite
Mg+
NH4
k+
Both b & c
(C)
Q.12
Shrinking & swelling is property of
Clay
Iron
Water
Smectite
(D)
Q.13
Slipperiness is due to____?
Covalent bond
Vander walls forces
Wire bond
None of these
(B)
Q.14
Kaolinite can be identified by
Spectrophotometer
Boiling
X-ray Diffraction
Breaking
(C)
Q.15
Who characterized soil formation as set of "4" process
Jinney
Newton
Zikig
Simonson
(D)
Q.16
Soil age can be found by.
Watch
Sunlight
Tree ring counts
None of these
(C)
Q.17
Catena mean____?
Contiguous soil extending from hill
Slow movement of water
Eruption of volcano
None of these
(A)
Q.18
Mollic refers to____?
B Horizon
C Horizon
U Horizon
Surface horizon
(D)
Q.19
Allelopathy is____?
Related to plant treatment
It is fungal disease
It is weathering
None of these
(A)
Q.20
Deposits in quite water of lake are called____?
Eolian
Wouvial
Alluvial
Lacustrine
(D)
Q.21
Material deposited by wind is called.
Regolith
Colluvial
Alluvium
Eolian
(D)
Q.22
Which is passive factor of weathering?
Climate
Organisms
Parent material
Temperature
(C)
Q.23
Who gave the equation for study of soil property?
Ziebig
Neil
Newton
Hans Jenny
(D)
Q.24
Product of microorganism that appears to chelate calcium?
Pyruvic acid
2-ketogluconic acid
Carbon dioxide
Phosphoric acid
(B)
Q.25
Relationship, which exists between lichen.
Parasitic
Symbiotic
Host-guest
Saprophytic
(B)
Q.26
Expansion of water on freezing is ____?
1%
0.9%
9%
3%
(C)
Q.27
Weathering is____?
Destructive process
Constructive process
Both a & b
None of these
(C)
Q.28
Geochemical weathering processes occurs
On surface
Below soil solum
At the level
On the mountain
(B)
Q.29
Weathering will____?
Cease after complete formation of soil
It is continuous process
It occurs according to requirement
All of the above.
(B)
Q.30
No. Of mineral deposits found in Pakistan is:
100
60
3
None of these
(B)
Q.31
Which compound is mostly used in Pakistan for the reclamation of Saline-Sodic & Sodic soils.
Apatite
Dolomite
gypsum
Calcite
(C)
Q.32
Which mineral contains Phosphorus____?
Igneous
Metamorphic
Apatite
None of these
(C)
Q.33
Color of muscovite is____?
White
Black
Yellow
Light Green
(A)
Q.34
(Ca) NaAlSi3Og is formula of_____?
Plagioclase Feldspar
Pyroxenes
Feldspar
Quartz
(A)
Q.35
Most abundant mineral is the earth crust is___?
N-Feldspar
Feldspar
S-Feldspar
Amphibole
(B)
Q.36
Fracture can be defined as___?
Irregular Breaking
Breaking along defined plains
At right angle
None of these
(A)
Q.37
The streaked appreance of Granitic gneiss is called____?
Marl
Lineation
Still
Halite
(B)
Q.38
Schist is example of_____?
Stone
Metamorphic rock
Name of mountain
Plastica
(B)
Q.39
Which rocks are harder____?
Metatamorphic
Sedimentary rocks
Igneous
Sandstone
(A)
Q.40
Metamorphic rocks are formed from_____?
Igneous rocks
Sedimentary
Both a&b
Cleavage
(C)
Q.41
Evaporate means____?
Evaporation of liquid
Sales ppt from water
Vapours
None of these
(B)
Q.42
Example of Evaporate is____?
An hydrite
Gypsum
Both a&b
None of these
(C)
Q.43
Marble is____?
Hard clay
Stone
Stone
Soft line mud
(C)
Q.44
Rocks formed by compacted clays or mud are called:
Shale
Clay stone
Sandstone
Plastics
(A)
Q.45
Silt stones consist of grains whose size range from.
0.625 mm
0.002 mm
0.0625 mm
Both b&c
(D)
Q.46
The size of grains present in sands structure range: -
2-0.0625 mm dia
0.0625-2mm
0- 1 mm dia
Non of above
(A)
Q.47
Rocks, which are formed by disintegration of pre-existing by weathering, are
Sandstone
Clastics
Igneous
Greis
(B)
Q.48
Which rock contains potash feldspar?
Syenite
Gabbro
Norite
All of the above
(A)
Q.49
Rhyolite is_____in nature?
Acidic
Basic
Both of above
None of these
(A)
Q.50
Weathering of gabbros gives_____?
Sand & Clay
Clay & Mg Oxides
Clay & Iron oxide
Sand iron oxide
(C)
Q.51
Tuff is_____?
Soil
Water
Volcanic ash
Consolidated ash
(D)
Q.52
Large pieces of erupted magma are called____?
Volcanic block
Dike
Volcanic ash
Sill
(A)
Q.53
Rocks having coarse bubble holes are called____?
Purr ice
Mafic
Felsic
Scoria
(D)
Q.54
Places where volcanoes occur are_____?
Pacific Ocean
Mediterrancan sea
Mid-Atlantic Ridge
All above
(D)
Q.55
Thickness of Dikes ranges from_____?
2-10 m
Few cm-10cm
Few m-10
12-10cm
(A)
Q.56
Thick concordant bodies which force the overlying sediments to form dome-shaped hills are called_____?
Laccoliths
Dike
Pegmatitic
Batholithis
(A)
Q.57
Structure size of aphantic rock is_____?
Course- grained like
Phenocryst
Large-Glassy
Fine-Grained
(D)
Q.58
Igneous rock whose crystal is >1 cm called____?
Plutonic
Felsic
Pegmatitic
Mafic
(C)
Q.59
Felsic rocks consist of____?
Fe
Biotitic
Quartz
Quartz & Feldspars
(D)
Q.60
Color of basic/mafic rocks is_____?
Dark-colored
Light green
Blue
Yellow
(A)
Q.61
Plutonic rocks are also called
Intrusive igneous
Metamorphic
Sedimentary
Extrusive igneous rock
(A)
Q.62
Fine-grained rocks formed on earth crust are called____?
Intrusive igneous rock
Sedimentary rock
Extrusive rock
Plutonic
(C)
Q.63
Rocks formed from molten magma are
Metamorphic
Igneous
Plutonic igneous rock
sedimentary
(B)
Q.64
The inner shell of the earth consists of
Fe
Ni
Silicate
both a & c
(D)
Q.65
Lithosphere refers to_____?
Zone of atmosphere
Zone of ozone
Zone of earth crust
Zone of water
(C)
Q.66
Hydrosphere refers to_____?
Zone of Water
Zone of atmosphere
Zone of Air
Zone of earth crum
(A)
Q.67
Age of earth is______?
4.5 billion yrs
4 billion
1 Billion yrs
6 billion
(A)
Q.68
Planets in our system are_____?
8
12
10
9
(D)
Q.69
Problem of erosion in Thal & Cholistan is due to
Wind
Water
Fire
atmosphere
(A)
Q.70
Mechanism of materials uptake by plant is by
Diffusion
Root interception
Mass Flow
All of above
(D)
Q.71
Father of agricultural chemistry is_____?
Von Liebig
Newron
Neil brady
J. jones
(A)
Q.72
Elements essentially required for growth of all plant species are____?
32
17
5
3
(B)
Q.73
Main product of photosynthesis is_____?
C12 H24 012
C6H12O6
C5 H12 06
C3H6O3
(B)
Q.74
Histosols are found in____?
Pakistan
Alaska
Canada
Both A & B
(D)
Q.75
Organic soils are called_____?
Peat
Muck
Aridisols
Both a&c
(D)
Q.76
Mineral soils contain organic carbon____?
>40%
<20
5
>1%
(B)
Q.77
Non-consolidated upper part of the earth crust that serves a natural medium for plant growth is called.
Water
Soil
Fire
Air
(B)