Physical Science ICAR JRF 2020 Question Paper

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Physical Science ICAR JRF 2020

Physical Science ICAR JRF 2020

 

Q.1 K in Darcy’s Law (q =K.A/L)is represented by?

1. Flux density
2. Hydraulic conductivity
3. Hydraulic gradient
4. Hydraulic head

Hydraulic conductivity

Q.2 GPS needs at least_____signals from satellites for providing geographic location?

1.1
2.3
3.2
4.4

4

Q.3 The rate of decomposing organic matter is affected negatively by the presence of?

1. Protein
2. Fat
3. Lignin
4. Water-soluble compounds

Lignin

Q.4 Stoke’s Law suggests that velocity of fall of particles is directly proportional to the?

1. Density of the medium
2. Square of the density of the medium
3. Radius of the particle
4. Square of the radius of the particle

Square of the radius of the particle

Q.5 The conversion of a sol to a gel is called?

1. Solation
2. Gelation
3. Filtration
4. Precipitation

Gelation

Q.6 A surface horizon produced by continuous cropping is known as?

1. Plaggen epipedon
2. Ochric epipedon
3. Umbric epipedon
4. Anthropic epipedon

Anthropic epipedon

Q.7 Comparatively stable fraction of the soil organic matter, left after the decomposition of major portion of added plant and animal residues, is called?

1. Podzol
2. Mineralization
3. Humus
4. Immobilization

Humus

Q.8 The albedo is the highest in?

1. Water surface
2. Bare soil
3. Cropped area
4. Ice

Ice

Q.9 In general, lower the latitude of a place, the?

1. More the solar energy it receives
2. Lesser the solar energy it receives
3. The more windy is the place
4. The climate is cold

More the solar energy it receives

Q.10 Match List I with List II?

List I List II
A. Thomas Way I.pH
B. Thomas Graham II.PF
C. Sorenson III.Colloid
D. Schofield IV..CEC

Choose the correct answer from the options given below:

1. A- IV, B – II, C – I, D- Ill
2. A-III, B – IV, C – I, D-II
3. A-III, B- IV,C – II, D – I
4. A-IV, B-III, C – I, D – II

A-IV, B-III, C – I, D – II

Q.11 The common table sugar is?

1. Glucose
2. Fructose
3. Sucrose
4. Maltose

Sucrose

Q.12 Amount of Boron uptake may be higher in?

1. Organic Soil
2. Acidic Soil
3. Acidic soil of humid region
4. Clayey soil

Organic Soil

Q.13 The instrument used for estimating consumptive use of water is?

1. Anemometer
2. Piezometer
3. Lysimeter
4. Hydrometer

Lysimeter

Q.14 The formula for Ethane is?

1. CH4
2. CH3 CH3
3. CH3,CH2 CH2 CH3
4. CH3 (CH2)4 CH3

CH3 CH3

Q15 Orientation of leaves and other parts of the plant towards sunlight is called?

1. Photoperiodism
2. Phototropism
3. Long day plants
4. Short day plants

Phototropism

Q.16 DDT has stable and high persistence in

1. Plants only
2. Soil only
3. Water only
4. Plant, Soil and Water

Soil only

Q.17 Which one of the following physical processes is responsible for soil heat loss?

1. Infiltration
2. Transpiration
3. Evaporation
4. Condensation

Evaporation

Q.18 The unconsolidated material above the parent material is called?

1. Profile
2. Regolith
3. Solum
4. Pedon

Solum

Q.19 The spectral bands used in Greenness Vegetation Index are?

A. Red
B. Blue
C. Green
D. NIR
E. MIR

Choose the correct answer from the options given below

1. A, D, C and E only
2. A, B and C only
3. B, C and D only
4. A, B, C and D only

A, B, C and D only

Q.20 The major factors controlling the leaching loss of nitrate are
A. Concentration of nitrate in soil profile at the time of leaching
B.Quantity of water passing through the soil profile
C. Water holding capacity of soil

Select the correct answer from the options given below

1. A only
2. B only
3. Both A and B
4. Conly

Both A and B

Q.21 Which one of the following organisms is NOT free living?

1. Azotobacter
2. Cyanobacteria
3. Rhodospirillum
4. Frankia

Frankia

Q.22 Which one of the following is the active factor of soil formation?

1. Climate
2. Relief
3. Topography
4. Time

Climate

Q.23 Sodium Adsorption ratio can be expressed as?

Physical Science ICAR JRF 2020 Question Paper

 

Right Answer First option

Q.24 Which of the following is related with in situ moisture conservation?

1. Fertigation
2. Weeding
3. Mulching
4. Seeding

Mulching

Q.25 Match List I with List I?

List I List II
A.In situ measurement I.Textural classification chart
B.USDA II.Wilting range
C.Arrangement of soil particles III.Soil moisture
D.Above 15 bar IV.Soil structure

Choose the correct answer from the options given below

1. A-I, B- II, C – II, D – IV
2. A-IV, B III, C – II, D -I
3. A – III, B -I, C- IV, D – II
4. A -III, B- IV, C – I, D – II

A – III, B -I, C- IV, D – II

Q.26 The chemical used to remove organic matter from the soil during mechanical analysis is?

1. Cacl2
2. HCI
3.NaOH
4. H2O2

H2O2

Q.27 Flame photometry is based on the principle of?

1. Absorption spectroscopy
2. Emission spectroscopy
3. ESR spectroscopy
4. IR spectroscopy

Emission spectroscopy

Q.28 Which gas is emitted from the soil due to rice cultivation?

1.N2
2 C2H2
3. CH4
4 SO2

CH4

Q.29 The process of enrichment of surface water bodies with nutrients is called?

1. Eutrophication
2. Oligotrophication
3. Putrefaction
4. Nutrification

Eutrophication

Q.30 Match List I with List lI

List I List II
A. Soil Quality I.Removal of the fertile layer
B. Water pollution II.Point & Non-point source
C. Soil erosion III. Agricultural crops
D. Land capability IV. Soil health

Choose the correct answer from the options given below:-

1. A -IV, B – II, C – 1, D – III
2. A-II, B- IV, C – III, D – I
3. A -II, B – IIl, C IV, D -I
4. A -III, B – II, C – IV, D-I

A -IV, B – II, C – 1, D – III

Q.31 The predominant mech anism of gaseous exchange in soil is?

1. Mass flow
2. Contact exchange
3. lon exchange
4. Diffusion

Diffusion

Q.32 The drought-tolerant leguminous green manures are?

1. Crotalaria juncea and Tephrosia purpurea
2. Vigna trilobata and Lens culinaris
3. Trifolium alexandrinum and Cymopsis tetragonaloba
4. Vigna unguiculata and Macrotyloma uniflorum

Crotalaria juncea and Tephrosia purpurea

Q.33 Absence of air in soil limits the activity of?

1. Microorganisms only
2. Mesoorganisms only
3. Micro-organisms and affects oxidation process
4. Pollutants only

Micro-organisms and affects oxidation process

Q34 Which master horizon of soil is known as the zone of illuviation?

1.O horizon
2. A horizon
3. B horizon
4. C horizon

B horizon

Q.35 The number of epipedon commonly found in India is?

1.3
2.8
3.9
4.13

3

Q.36 Match List I with List II

List I List II
A.Gleization I. Desilication
B.Laterisation II.Process of decomposition of organic matter
C.Humification III. Concretions of Fe &Mn
D.Podzolisation IV. Removal of oxides of Fe & Al

Choose the correct answer from the options given below:-

1. A-III, B-I,C – II, D – IV
2. A-II, B -I,C- IV, D – III
3. A -IV, B-I,C – II, D – III
4. A -I, B-II, C – III, D – IV

A-III, B-I,C – II, D – IV

Q.37 Infrared thermometer works on the principle of which of the following Radiation Laws?

1. Beer’s Law
2. Stefan Boltzman’s Law
3.Wien’s Law
4. Kirchoff s Law

Stefan Boltzman’s Law

Q.38 The most abundant element in the earth’s crust is?

1. Oxygen
2 .Silica
3. Aluminium
4.Iron

Oxygen

Q.39 Black cotton soil is commonly represented in order of?

1. Alfisols
2. Vertisols
3. Entrisols
4. Aridisols

Vertisols

Q.40 Which one of the following is an aerobic non-symbiotic nitrogen-fixing bacteria?

1. Azotobacter
2. Clostridium
3. Rhizobium
4. Beizerinkia

Azotobacter

Q.41 Working range of tensiometer for determination of soil moisture is?

1.0-15 bar
2.0-0.8 bar
3.0.8 15 bar
4.0-0.3 bar

0-0.8 bar

Q.42 The highest category of soil classification system is?

1. Series
2. Type
3. Great groups
4. Order

Order

Q.43 The first steps in aggregate formation is?

1. Cementation
2. Dispersion
3. Flocculation
4. Compaction

Flocculation

Q.44 Match List I with List II

List I List II
A.Robinson I.Colour Chart
B.Yoder II.Consistency limits
C.Munsell III.Pipette method
D.Atterberg IV.Wet sieving

Choose the correct answer from the options given below:-

1. A- III, B-IV,C-I, D-II
2. A -III, B- I, C – I, D – IV
3. A-II, B- I ,C – IV, D – Ill
4. A – II, B – IIl, C – I, D – IV

A- III, B-IV,C-I, D-II

Q.45 Which of the following diagnostic surface horizons is not common in India?

1. Mollic
2. Anthropic
3. Ochric
4. Umbric

Anthropic

Q.46 The most important process of chemical weathering process of rocks is?

1. Solution
2. Hydration
3. Hydrolysis
4. Oxidation

Hydrolysis

Q.47 Process of intermixing of soil horizons by external factor is called?

1. Argillation
2. Horizonation
3. Gleization
4. Pedoturbation

Pedoturbation

Q.48 If the soil temperature at 5 cm depth is 20°c then what will be its value in degree Farenheit?

1. 52’F
2. 86’F
3. 68°F
4.98°F

68°F

Q.49 The potential difference between the fived part and freely mobile portion of the solution side of double layer in soil colloids is known as?

1. Total Water Potential
2. Theta Potential
3. Gravitational Potential
4. Zeta Potential

Zeta Potential

Q.50 RADAR works in which of the following EMR bands?

1. Visible
2. Radiowave
3. Microwave
4. Infrared

Microwave

Q.51 What is the C:N ratio of normal soil?

1. 5:1
2. 10:1
3.15:1
4. .20:1

10:1

Q.52 The correct order of wind erosion processes is?

1. Surface creep, Saltation, Suspension
2. Saltation, Surface creep, Suspension
3. Suspension, Surface creep, Saltation
4. Saltation, Suspension, Surface creep

Saltation, Suspension, Surface creep

Q.53 Which one of the following is the soil order for old alluvial soils?

1. Inceptisols
2. Entisols
3. Histosols
4. Molisols

Inceptisols

Q.54 The potentially renewable resource is?

1. Petroleum
2. Fossil fuel
3. Fertile soil
4. Coal

Fertile soil

Q.55 The make up of soil according to proportion of sand, silt and clay is known as?

1. Soil texture
2. Soil structure
3. Soil horizon
4. Soil health

Soil texture

Q.56 Shale on metamorphosis changes to?

1. Quartizite
2. Marble
3. Slate
4. Basalt

Slate

Q.57 The ratio of the total mass of soil solids to the total volume of soil solids is called?

1. Bulk density
2. Porosity
3. Particle density
4. Plasticity

Particle density

Q.58 Soils of these textured class have minimum water holding capacity?

1. Sandy soil
2. Clay soil
3. Loam soil
4. Clay loam soil

Sandy soil

Q.59 The K bearing mineral dominated in soil is?

1. Olivine
2. Hornblende
3. Micas
4. Zircon

Micas

Q.60 Available water for plant indicates water held in?

1.0.33 15 bar
2. 0.1-0.2 bar
3. Above 15 bar
4. Below 0.1 bar

0.33 15 bar

Q.61 The consumption of water containing high levels of nitrate-N can lead to?

1. Methemoglobinemia in infants
2. Night blindness
3. Colour blindness
4. Scurvy disease

Methemoglobinemia in infants

Q.62 Which of the following best represents the pH range of sodic soils?

1.8-10
2. <8.5
3. >8.5
4. 6.0 8.0

>8.5

Q.63 Soil heat flux is upward during?

1. Noon
2. Afternoon
3. Forenoon
4. Midnight

Midnight

Q.64 Total nitrogen in soil is measured by?

1. Kjeldahl method
2. Walkley & Black method
3. Colorimeter method
4. Hydrometer method

Kjeldahl method

Q.65 The Resource Conservation Technologies include
A. Zero (or) Minimum Tillage
B. Direct Seeding
C. Bed Planting with residue mulch
Choose the correct answer from the options given below;-

1. All A, B and C
2. Both A and B
3. A only
4. Both B and C

All A, B and C

Q.66 According to Ministry of Water Resources, the waterlogged areas are the land areas having?

1. Water-table within 2 m from land surface
2. Water-table between 2-3 m from land surface
3. Water-table below 3 m from land surface
4. Standing water column

Water-table within 2 m from land surface

Q.67 Lime is required for the reclamation of?

1. Saline soil
2. Sodic soil
3. Acid soil
4. Acid sulfate soil

Acid soil

Q.68 Geohydrological unit of land which drains through a common point is called?

1. Pond
2. Water body
3. Watershed
4. Rain shed

Watershed

Q.69 Water requirement of Rice crop?

1. 25 cm
2. 50 cm
3. 120 cm
4. 200 cm

120 cm

Q.70 Phosphate availability is maximum in the pH ranges of?

1.6.5-7.5
2. 5.5 6.5
3. 7.5-8.5
4. 8.5 9.5

6.5-7.5

Q.71 Chroma variables in determination of soil colour is represented by?

1. Spectral region of the colour
2. Whiteness of the colour
3. Relative brightness of the colour
4. Relative purity of the colour

Relative purity of the colour

Q.72 Environmental Protection Act was enacted in the year?

1. 1988
2. 1987
3. 1986
4. 1985

1986

Q.73 Soil heat flux is equal to

Physical Science ICAR JRF 2020 Question Paper

Anwer number third

Q.74 Illuviation is the process of?

1. Accumulation
2. Leaching9
3. Transportation
4. Weathering

Accumulation

Q.75 Which one of the following is 2:1 non-expanding clay mineral?

1. Kaolinite
2. Vermiculite
3. Montmorillonite
4. Illite

Illite

Q.76 Transformed Vegetation Index is expressed as?

  1. √NDVRI
  2. (NDVRI)2
  3. √GVI
  4. √0.5+NDVRI

√0.5+NDVRI

Q.77 Clay particles in soil have the diameter of?

1. <0.002 mm
2. 0.02-0.002 mm
3.0.02-0.2 mm
4. 2.0-0.20 mm

<0.002 mm[/bg_collapse]

Q.78 Regur is used to identify which of the following soils?

1. Lateritic soil
2. Red soil
3. Black soil
4. Acid soil

Black soil

Q.79.In general, longer the plant is in contact with nitrate, there would be?

1. Constant accumulation of nitrate reserve
2. Greater nitrogen fixation
3. No effect on nitrate accumulation
4. Reduced denitrification

Constant accumulation of nitrate reserve

Q.80 Soil pH is measured by making soil: water suspension in the ratio of?

1.1:10
2.1:5
3.1:2.5
4.1:1

1:2.5


Q.81 The building units for oligosaccharides and polysaccharides are?

1. Monosaccharides
2. Glyceraldehyde
3. Dihydroxyacetone
4. Trioses

Monosaccharides

Q.82 Decomposition of algae and macrophytes?

1. Leads to reduced nitrogen content
2. Increases dissolved oxygen
3. Enriches water quality
4. Reduces dissolved oxygen, leads to fish mortality and impairs water quality

Reduces dissolved oxygen, leads to fish mortality and impairs water quality

Q.83 Biological control of wind erosion is?

1. Strip cropping
2. Contour bunding
3. Graded bunding
4. Ridge and furrow system

Strip cropping

Q.84 Which nutrient element imparts indirect drought resistance?

1. K
2. Ca
3. Mg
4. S

K

Q.85 Ifa satellite completes revolution in orbit two times a day, then angular velocity is?

1. 180° /day
2. 360° /day
3.720°/day
4.90°/day

720°/day

Q.86 Which software is used for spatial data analysis?

1. GIS
2. GPS
3. IRS
4. GSM

GIS

Q.87 Specific agricultural practices used to slow down the water run-off include?

A. Contour tillage
B. Strip Cropping
C. Terracing

1. Both A and B
2. Both B and C
3. All A, B and C
4. Both A and C

All A, B and C

Q.88 The parent material constituted by the windblown transported material consisting of silt particles is known as?

1. Alluvium
2. Colluvium
3 Loess
4. Dune

Loess

Q.89 Hydrometer is used in soil analysis to determine?

1. Soil moisture content
2. Soil hydraulic conductivity
3. Soil structure
4. Soil texture

Soil texture

Q.90 Phosphorous in DAP is?

1.25%
2. 60%
3. 18%
4. 46%

46%

Q.91 Soil temperature at 5 cm depth is higher in?

1. Crop field
2. Bare field
3. Wet field
4. Ploughed field

Bare field

Q.92 The On-Farm Development (OFD) activities undertaken under Command Area Development include
A. Construction of field channels and drains
B. Reclamation of waterlogged areas
C.Renovation and rehabilitation of minor irrigation tanks

Choose the correct answer from the options given below

1. A only
2. Both B and C
3. Conly
4. All A, B and C

All A, B and C

Q.93 The essentiality of Molybdenum was discovered by?

1. AL Sommer and C P Lipman
2. D I Arnon and P R Stout
3. C Sprengle
4. G Gris and P H Brown

D I Arnon and P R Stout

Q.94 Deficiency of Vitamin A causes?

1. Night blindness
2. Scurvy disease
3. Anaemia
4. Beri-Beri

Night blindness

Q.95 Under saturated condition, the soil water potential is?

1. Always negative
2. Either positive and negative
3. Always positive
4. May be zero or negative

May be zero or negative

Q.96 Which of the following is NOT a suborder of entisols?

1. Aqualfs
2. Fluvents
3. Orthents
4. Arents

Aqualfs

Q.97 Rhizosphere is closely related to?

1. Soil structure
2. Soil texture
3. Plant root system
4. Wilting range

Plant root system

Q.98 Natural aggregates of soil are called?

1. Clods
2. Peds
3. Clusters
4. Floccules

Peds

Q.99 For the restoration of highly degraded areas, plantation of which of the following is recommended?

1. Tree seedlings
2. Grasses
3. Fast-growing tree seedlings
4. Nitrogen-fixing tree seedlings

Grasses

Q.100 The critical stages in rice with respect to irrigation are?

1. Crown Root Initiation (CRI) and Flowering Sprouting and Panicle initiation
2. sprouting and panicle initiation
3. Early littering and Flowering
4. Ripening and Maturity

Question dropped by ICAR

Q.101 The equation to estimate soil loss by wind erosion is E = IRKFCWDB, in which K stands for?

1. Soil textured class factor
2. Surface roughness factor
3. Surface cover factor
4. Wind barrier factor

Surface roughness factor

Q.102 Match List I with List I

List I List II
A.Splash erosion I.Wind Erosion
B.Saltation II.Rainfall factor
C.Erosivity III.Impact force required to detach soil particles
D.Dispersion ratio IV.Impact of falling raindrops

Choose the correct answer from the options given below

1. A-I, B-II, C – IV, D – I
2. A-IV, B-I,C -II, D- Ill
3. A-II, B- III, C – IV, D-I
4. A-III, B – IV, C – I, D -I

A-IV, B-I,C -II, D- III

Q.103 Which instrument is used for the determination of K content in soil?

1. UV-VIS spectrophotometer
2. Atomic absorption spectrophotometer
3. Flame photometer
4. Colorimeter

Flame photometer

Q.104 Which of the following is NOT associated with podzolization?

1. Removal of Fe & Al
2. Removal of Silica
3. Removal of humus
4. Acidic condition

Removal of Silica

Q.105 The WHO standard of drinking water is?

1. 20 mg NO3¯ -N/L
2. 10 mg NO3¯  – N/L
3. 30 mg NO3¯  -N/L
4. 50 mg NO3¯  -N/L

10 mg NO3¯  – N/L

Q.106 Biotite is the example of which type of rock-forming mineral?

1. Orthosilicate
2. lososilicate
3. Tectosilicate
4. Phyllosilicate

Phyllosilicate

Q.107 Weight of one ha furrow slice of root zone depth soil is about?

1. 2.2 x 106 kg
2. 1.5 x 106 kg
3. 20 x 106 kg
4.15 x 106 kg

2.2 x 106 kg

Q.108 Which of the following is a man-made epipedon?

1. Albic
2. Ochric
3. Anthropic
4. Mollic

Anthropic

Q.109 Soil moisture characteristics curve represents the relationship between?

1. Soil texture and soil moisture content
2. Soil structure and soil moisture content
3. Available soil moisture and soil moisture content
4. Soil moisture tension and soil moisture content

Soil moisture tension and soil moisture content

Q.110 Bench terrace sloping outwards are effective only in?

1. High rainfall area
2. Low rainfall area
3. Medium rainfall area
4. Heavy rainfall area

Low rainfall area

Q.111 Biofertilizers are?

1. Organic manure
2. Gree manure
3. FYM
4. Culture of micro-organisms

Culture of micro-organisms

Q.112 Most limiting factor for crop cultivation in desert areas is?

1. Water only
2. Temperature only
3. Water and Temperature
4. Solar-radiation

Water only

Q.113 Instrumental method of analysis of pesticide residue include chromatographic techniques such?

A. TLC
B. GLC
C.HPLC

1. Both A and B
2. All A B and C
3.Conly
4. Both B and C

All A B and C

Q.114 The enzymes which catalyse the interconversion of aldose and ketose sugars are?

1. Isomerases
2. Epimerases
3. Carboxylases
4. Transferases

Isomerases

Q.115 Emissivity of black body is?

1.0.50
2.0.25
3. 1.00
4 . 0.75

1.00

Q.116 Water erosion permitting crop is?

1. Red gram
2. Black gram
3. Soyabean
4. Cow pea

Red gram

Q.117 If the mean annual soil temperature is 8-15°C and the difference between mean annual summer and mean annual winter temperature is < 5°C, then the soil temperature regime is known as?

1. Mesic
2. Isomesic
3. Thermic
4. Isothermic

Isomesic

Q.118 Keen’s box is used to determine which of the following properties?

1. Water holding capacity
2. Soil temperature
3. Soil permeability
4. Soil moisture tension

Water holding capacity

Q.119 Match List I with List lI

List I List II
A. Spectral resolution I. 22 Days
B. Spatial resolution II.8 bits
C.Radiometric resolution III 110 nm
D. Temporal resolution IV 36 m

Choose the correct answer from the options given below
1. A-IV, B-I1, C – III, D – I
2. A-III, B – IV, C – II, D -I
3. A -II, B- IV, C – I, D – II
4. A – III, B- II, C – I, D – IV

A-III, B – IV, C – II, D -I

Q.120 Under what condition, denitrification is a major mechanism of nitrogen loss from the soil?

1. Well-drained soil
2. Fallow soils
3. Submerged soil
4. Pastured land soil

Submerged soil

Physical Science ICAR JRF 2020 Question Paper

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