Soil Science (2021) | Agri Master Mind

Question: ‘Hidden hunger’ in plant means

Visual deficiency symptoms appear only when the nutrient is deficient.
Severe yield reduction may occur without the appearance of deficiency symptoms.
The nutrient is not actually deficient but apparently seems to be deficient.
Visual deficiency symptoms of an element are suppressed by other elements.

Question: the term oligotrophic refers to

High nutrient in water
High aquatic productivity
Algal blooms
Low nutrients and productivity

Question: Arrange the following forms of soil consistency into increasing soilwetnessA Soft B Friable C Sticky D Plastic E Hard Choose the correct answer from the options given below.

A, B, C, D, E
A, C, D, B, E
C, D, A, B, E
E, B, A, D, C,

Question: The term Agronomy is derived from

German word
Spanish word
Latin word
Greek word

Question: The Indian Remote Sensing satellite (IRS) A look over a fixed point at the same local point. B are at a low altitude (<1000 km) C are used for weather forecasting. D have large agricultural and natural resource applications. E provide services to telecommunication. Choose the correct answer from the options given below.

A, B and D only
A, B and C only
B, D and E only
A, D and E only

Question: Which of the following statements is/are true for Tensiometer? A It measures soil water potential. B it is simple in operation and very useful for scheduling irrigation. C It can also be used for measuring soil water flux. D Although limited to <1 bar matric potential, this range can be increased by increasing permeability of porous cup. Choose the correct answer from the options given below.

A, B and C only
A, B and D only
A and D only
A, B, C and D only

Question: The running water is called

Lentic
Lotic
Mesic
Xeric

Question: Silviculture is related with the study of

Grasses
Forestry
Vegetables
Agricultural growth

Question: Which of the following is NOT associated with particle size analysis

Dispersion
Fractionation
Flocculation
Sedimentation

Question: Phosphorus is taken by the plants from the soil in the form

H2PO4+ only
HPO42- only
PO43- only
both H2PO4- and HPO42-

Question: Which of the following practice does NOT contribute to in-situ moisture conservation?

Live mulching
Straw mulching
Plastic mulching
Weeding

Question: The chemical obtained from chrysanthemum that has insecticidal properties is

Pyrethrum
pathogen
parasite
Parathyroid

Question: The organism involved in the process of conversion of nitrate to nitrogen gas is

Nitrobacter
Azatobacter
Thiobacillus
Nitrocystis

Question: World soil day is celebrated in every year on

10th September
5th October
10th November
5th December

Question: Which of the following compounds release heat when dissolved in water?

Barium chloride
Ammonium chloride
Lead chloride
Calcium chloride

Question: Which crops cover the largest area under drip irrigation in India?

Field crops
Silviculture crops
Horticulture crops
Agri silviculture crops

Question: Besides Rabi and Kharif which is the third season crop in India?

Zaid
Barsati
Sharad
Winter

Question: Which of the following is NOT related to anion exchange capacity?

Dissociation of carboxyl and phenolic group on broken crystal edges
Dissociation of OH ions from Al-OH group on the broken crystal edges and addition of H ion on these sites
Dissociation of OH ion from Al-OH group on the broken crystal edges and addition of H ion on these sites
Addition of H ion on humus micelle

Question: The first fungal antibiotic discovered was

Streptomycin
Penicillin
Gentamycin
Griseofulvin

Question: The nucleic acid base found in mRNA but not in DNA is

Adenine
Cytosine
Guanine
Uracil

Question: Which does NOT belong to the soil order in Soil Taxonomy?

Oxisols
Andisols
Podsols
Gelisols

Question: Which of the horizons of a soil profile represents the zone of accumulation of clay, sesquioxides, humus alone or in combination?

A horizon
B horizon
C horizon
E horizon

Question: The term 'GPS' stands for:

Geographical Positioning System
Global Projection System
Global Positioning Science
Global Positioning System

Question: Which of the following soil types has the highest clay content?

Silty clay loam
Silty clay
Sandy loam
Silty loam

Question: Which of the soil water matric potential corresponds to filed capacity soil water content?

pF 2.5
pF 4.2
pF 1.0
pF 0

Question: Which of the following programme has considered the "poorest of the poor" people as its target group?

Training of Rural Youth for Self-Employment (TRYSEM)
Indira Awaas Yojana (IAY)
Integrated Rural Development Programme (IRDP)
Jawaharlal Nehru Rozgar Yojana (JRY)

Question: Agrocin-84 is

Antibiotic
Bacteriocin
Phenolic compound
Enzyme

Question: Identify the series with decreasing order of water use efficiency.

i. Pitcher pot irrigation. ii. Drip irrigation. iii. Sprinkler irrigation. iv. Surface irrigation
i. Surface irrigation. ii. Sprinkler irrigation. iii. Drip irrigation, iv. Pitcher pot irrigation
i. Drip irrigation. ii. Sprinkler irrigation. iii. Surface irrigation. iv. Pitcher pot irrigation
i. Sprinkler irrigation. ii. Surface irrigation. iii. Pitcher pot irrigation, iv drip irrigation.

Question: Match List I with List II List I List II Weathering reactions Weathering process A. Removal of iron and aluminum oxides humus etc in a humid climateI. Eluviation B. Reduction of iron in the waterlogged horizon.II. Podzolization C. Intermixing of the horizonsIII. Gleization D. Mobilization and translocation of Fe & Al oxides humus, CaCO3 and other saltsIV. Pedoturbation Choose the correct answer from the options given below:

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

Question: Who among the following is credited for developing the concept of SRI (System of Rice Intensification)

Henri de Laulanić
Yuan Longping
MS Swaminathan
Norman E. Borlaug

Question: Which of the following structures is most desirable for agricultural operations?

Prismatic
Platelike
Subangular blocky
Crumb

Question: Golden rice is rich in

Vitamin A
Vitamin B
Vitamin C
Vitamin K

Question: Diversified farming system is otherwise known as

Integrated Farming System
Hilly Farming
Jhum Farming
Terrace Farming

Question: Pressure plate apparatus is used for measurement of soil moisture tension upto

4.2 bars
0.33 bar
30.0 bars
15.0 bars

Question: The Strategic Research Extension Plan (SREP) is related with

National Institute of Agricultural Extension Management (MANAGE)
Agricultural Technology Information Centre (ATIC)
Agricultural Technology Management Agency (ATMA)
National Bank for Agricultural and Rural Development (NABARD)

Question: Stoke's law suggests that the velocity of fall of particles is directly proportional to

Density of the particle
Density of the suspension
Radius of the particle
Viscosity of the medium

Question: What is the percentage of freshwater used in agriculture globally?

90%
70%
50%
30%

Question: A layer of ice formed on the surface of lakes in cold regions because

Ice is less dense than liquid water
There is no exchange of heat between water below and the cold air above
Cold wind makes the surface water to freeze
Ice is denser than liquid water

Question: The quantity of water required to irrigate one hectare area with 4 cm deep water is

4.00.000 liters
40.000 liters
4.000 liters
40.00.000 liters

Question: Terracing is an effective method of soil conservation in

Hilly area
Plain area
Desert area
Coastal regions

Question: The angle formed between oxygen and hydrogen in water molecule is

50⁰
75⁰
100⁰
105⁰

Question: The structural formula of phyllosilicates is

SiO4-4
Si₂076-
Si2052-
SiO32-

Question: The process by which protein and proteinaceous compounds are decomposed into amino acids or amines is known as

Aminisation
Ammonification
Immobilization
Nitrification

Question: Agronomical measure for soil conservation is

Contour furrow
Contour ridge
Strip cropping
Contour ridge and furrow

Question: Match List I with List II List I List II Role of the nutrient Nutrient elements A. Energy Carrier I. Mo B. Constituent of chlorophyll II. PC. Nitrate reductase III. Zn D. Khaira disease IV. Mg Choose the correct answer from the options given below:

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

Question: Ninhydrin with evolution of CO₂ forms a blue complex with

Peptide bond
Serotonin
α-Amino acid
Histamine

Question: Match List I with List II List I List II Diagnostic characteristics Soil order A. Clay rich. presence of smectite type of clay mineral I. Alfisols B. Frigid and pergelic soil temperature regime II. Inceptisols C. Immature soil, presence of cambic, umbric, and mollic horizon III. Vertisols D. Ochric epipedon with an argillic subsurface horizon IV. Gelisols Choose the correct answer from the options given below:

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

Question: Evapotranspiration is directly measured by

Pan evaporimeter
Penman- Monteith equation
Hygrometer
Lysimeter

Question: Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Mulch conserves soil moisture Reason R: Mulches cut off solar radiation falling on soil surface and reduce evaporation. In light of the above statements, choose the correct answer from the options given below.

Both A and R are true, and R is the correct explanation of A
Both A and R are true, but R is NOT the correct explanation of A
A is true, but R is false
A is false, but R is true

Question: Direct method for the determination of soil moisture is

Gravimetric method
Gypsum block method
Tensiometer method
Pressure plate apparatus method

Question: Rain gauge is used for measuring of

Irrigation
Drainage
Rainfall
Runoff

Question: In the diet of a diabetic patient, the recommended carbohydrate intake should preferably be in the form of

Monosaccharides
Disaccharides
Polysaccharides
Oligosaccharides

Question: Which pesticide is most persistent in the environment?

Malathion
Dieldrin
Carbofuran
Indoxacarb

Question: The most advanced and efficient practice of fertilization is

Drip fertigation
Row application of fertilizer
Ring application of fertilizer
Topdressing of fertilizer

Question: Which of the following is typically a non-expanding clay mineral?

Montmorillonite
Illite
Vermiculite
Kaolinite

Question: Organic nutrients in water bodies promote A. Growth of natural population of aquatic bacteria B. Biological Oxygen Demand C. Eutrophication Choose the most appropriate answer from the options given below:

A only
B only
C only
All A. B and C

Question: Spent wash is highly polluted effluent released from

Pulp and paper industry
Tannery
Sugar industry
Distillery industry

Question: Soil particles size in suspension phenomenon during wind erosion is

<0.1mm
0.1-0.5mm
0.5-1 mm
>1 mm

Question: Shifting cultivation practiced in Northeast India is called

Sawami cultivation
Jhum cultivation
Harhi cultivation
Solum cultivation

Question: Ploughing across the slope in hilly area is called

Terracing
Crop rotation
Contour ploughing
No till farming

Question: Which of the following relationship is correct

CH+COH= 14
CH x COH =14
pH +pOH = 14
pH x pOH = 14

Question: Indian Space Research Organization is located in

New Delhi
Ahmedabad
Hyderabad
Bangalore

Question: Vesicular Arbuscular Mycorrhizae play active role in increasing the availability of

N
P
Ca
S

Question: Soil pH is measured from the soil water suspension in the ratio of

1: 1
1: 2.5
1:5
1 10

Question: Rate of flow of water through a porous medium under unit hydraulic gradients is known as

Flux density
Hydraulic conductivity
Permeability
Infiltration capacity

Question: Cobalt is a constituent of

Folic acid
Vitamin B 12
Niacin
Biotin

Question: Which of the following crops has minimum water requirement?

Rice
Sugarcane
Maize
Wheat

Question: The land capability classes suitable for cultivation are

I-IV
V-VIII
II-V
II-VI

Question: Which of the following soil suborders belong to the soil order of inceptisols?

Aquents
Ustalfs
Andepts
Udults

Question: Given below are two statements Statement I: The epipedon which is light in colour and contains <1% of organic matter is known as Ochric epipedon. Statement II: Dark coloured epipedon having >50% base saturation and organic matter of >1% is known as Histic epipedon. In light of the above statements, choose the correct answer from the options given below.

Both Statement I and Statement II are true
Both Statement I and Statement II are false
Statement I is true, but Statement II is false
Statement I is false, but Statement II is true

Question: Which one of the following is the active formers in soil development

Parent Material
Topography
Organisms
Time or Age of the soil

Question: Which of the following is used as herbicidal agent?

DDT
BHC
2.4-D
Chloroquene

Question: Given below are two statements Statement I: Chemical weathering involves disintegration and decomposition of minerals Statement II: Biological weathering accelerates physical and chemical weathering. In light of the above statements, choose the correct answer from the options given below.

Both Statement I and Statement II are true
Both Statement I and Statement II are false
Statement I is true, but Statement II is false
Statement I is false, but Statement II is true

Question: Spectroscopy deals with interaction of electromagnetic radiation with matter. What is the speed of this radiation in vacuum in m/s?

6x 108
5x108
4x108
3 x 108

Question: Height of capillary rise of water in soil is A. inversely proportional to the radius of the tube B. inversely proportional to the density of water C. directly proportional to the radius of water D. directly proportional to the hydrostatic pressure difference E. inversely proportional to the surface tension of water Choose the correct answer from the options given below:

A. B and D only
A only
A. B and E only
D and E only

Question: Ecological or physiological races are also known as

Ecads
Ecotone
Ecophens
Ecotypes

Question: Given below are two statements Statement I: Higher exchangeable sodium (>15%) makes the soil dispersed and favours soil crustation Statement II: Exchangeable calcium in soil helps in forming stable soil aggregates by its effect of flocculation. In light of the above statements, choose the correct answer from the options given below.

Both Statement I and Statement II are true
Both Statement I and Statement II are false
Statement I is true, but Statement II is false
Statement I is false, but Statement II is true

Question: Which of the following methods CANNOT be used to prevent N loss through denitrification?

Use of non-nitrate fertilizer
Use of nitrate fertilizer
Split application of fertilizer
Deep placement of fertilizer

Question: Micro sprinkler method of irrigation has the advantages of both

Sprinkler and drip irrigation methods.
Sprinkler and surface irrigation methods.
Drip and surface irrigation methods.
Surface and subsurface irrigation methods.

Question: Which one is correctly matched?

Carbamates – malathion
Organophosphates - carbofuran
Pyrethroid - parathion
Organochlorine – Endosulfan

Question: Butachlor belongs to

Amide group
Sulfonyl urea group
Urea group
Pyridine group

Question: Which of the following is NOT true?

Soil aeration depends on volume fraction of air-filled pores
Soil air has similar gaseous composition as of atmosphere
Soil aeration is restricted in compacted soil
Manuring increases CO₂ content in soil

Question: Which is plant originated insecticide?

Pyrethrum
Permethrin
Cypermethrin
Imidacloprid

Question: for the effective control of early blight of potato, which fungicide is most suitable

Zineb
Dithane M-45 3
Blitox-50
Difolatan

Question: Which is the major component of Bordeaux mixture?

Copper sulphate
Sodium chloride
Calcium chloride
Magnesium sulphate

Question: Which of the following biofertilizer is used to fix Nitrogen from the atmosphere nonsymbiotically

Rhizobium
Azolla
Azotobacter
Azospirillum

Question: The size of a Micro Watershed is

100 to 1.000 ha
1.000 to 10.000 ha
10.000 to 50.000 ha
Greater than 50.000 ha

Question: Nicotine belong to

Terpenoids
An alkaloids
Steroids
Carotenoids

Question: Volumetric composition of soil solid is:

25%
45%
50%
5%

Question: When dissolved in water, which of the following produces an ionic solution?

O2
CH2
CaCl2
C12H22O11

Question: Die-back symptoms in citrus are observed due to the deficiency of

Copper
Boron
Potassium
Calcium

Question: Match List I with List II List I List II A. Saturated flow in soil I. Wien's law B. Soil textural analysis II. Darcy's law C. Wavelength of emitted radiation-temperature relation III. Kirchhoff's law D. Diffusive flux of gas IV. Stokes law V. Fick's law Choose the correct answer from the options given below:

A-II. B-IV. C-III. D-V
A-II. B-IV. C-I. D-III
A-II. B-IV. C-I. D-V
A-II. B III. C-I. D-V

Question: In which of the following Azolla symbiotically associates to fix atmospheric nitrogen

Bacteria
Algae
Virus
Fungi

Question: Organic mulches are useful to

Increases evaporation
Decrease evaporation
Increase evapotranspiration
Increase potential evapotranspiration

Question: Match List I with List II List I List II Structural characteristics of the minerals Type of the clay mineral A. Presence of K ion in the interlayer space of crystal structure in clay I. Vermiculite minerals B. Mg ions are adsorbed between the crystal units of clay minerals II. Smectite C. Presence of one brucite layer (Mg(OH)s) along with 2:1 type of clay mineral in the crystal lattice III. Illite D. 2:1 type of expanding minerals IV. Chlorite Choose the correct answer from the options given below:

A-II. B-IV. C-III D-I
A-LB-III. C-II. D-IV
A-III. B-1.C-IV. D-II
A-II. B-L. C-IV. D-III

Question: Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R Assertion A: Equilibrium water content in soil at a certain matric potential is higher when the soil is under drying process (desorption) compared to when the soil is under wetting process (sorption). Reason R: Contact angle between water and the soil solid phase is greater during imbibition of water than during drainage. In light of the above statements, choose the most appropriate answer from the options given below.

Both A and R are correct, and R is the correct explanation of A
Both A and R are correct, but R is NOT the correct explanation of A
A is correct, but R is not correct
A is not correct, but R is correct

Question: Who is called Father of Pedology

N.C. Brady
E.W. Hillgard
H. Jenny
V. V. Dokuchaev

Question: Advance stage of sheet erosion is

Splash erosion
Rill erosion
Gully erosion
Rain drop erosion

Question: Which of the following radiation laws describes the relation between peak wavelength and temperature of an emitting body?

Kirchhoff's
Planck's
Stefan-Boltzmann's
Wien's

Question: Saturated hydraulic conductivity is measured in the field by

Constant head permeameter
Tensiometer
Infiltrometer
Guelph permeameter

Question: The organisms Cyanobacteria were formerly known as

Blue green algae
Beijerinck
Green algae
Streptococci

Question: The oxygen diffusion rate (ODR) is measured by the method of

Neutron scattering
Gamma-ray attenuation
Platinum microelectrode
Thermocouple psychrometer

Question: Which of the following element is the latest inclusion as the essential nutrient element

Boron
Cobalt
Chlorine
Nickel

Question: Pendimethalin is used as

Insecticide
Herbicide
Fungicide
Acaricide

Question: Which soil has the maximum bulk density

Silty Clay Loam
Clayey
Loamy
Sandy

Question: Which of the following is the concentrated organic manure

FYM
Compost
Bone meal
Cow dung

Question: The irrigation likely to be used, where water supply is ample and market value of crop is low

Drip irrigation
Check basin irrigation
Wild flooding irrigation
Sprinkler irrigation

Question: Highly toxic insecticide, according to WHO classification are coded as-

Red
Green
Yellow
Blue

Question: Which soil has more K fixation capacity

Montmorillonite
Vermiculite
Illite
Kaolinite

Question: Directorate of Wheat Research (DWR) is located at

Hyderabad
New Delhi
Indore
Karnal

Question: The most erosion resistance crop is

Black gram
Maize
Jowar
Bajra

Question: The soil infiltrability is

supply controlled
atmosphere controlled
soil profile controlled
only top few cm layer controlled

Question: In the irrigation water quality classification, high salinity class represents EC (dS/m) in the range of

0-0.25
0.25-0.50
0.50-0.75
0.75-2.25

Question: Toxins exuded from the roots of plants into soil are called

Pyrethrins
Repellants
Rotenones
Phytoalexins

Question: Given below are two statements Statement I: The permanent negative charges result from the isomorphous substitution. Statement II: The permanent negative charges result from exposed crystal edges. In light of the above statements, choose the correct answer from the options given below.

Both Statement I and Statement II are true
Both Statement I and Statement II are false
Statement I is true, but Statement II is false
Statement I is false, but Statement II is true

Question: Which one is the most effective and most commonly used repellent to control insects?

Rutegar-622
Deet (Di ethyl meta-toluamide)
Oil of citronella
Indolone

Question: In the rainfed wheat crop fields, susanta soil water potential is normally

Positive
Zero
Negative
Unit

Question: α-D-Glucose + 1120 → +52.50 ← +190 βD- glucose For glucose, the above reaction represents.

Optical isomerism
Mutarotation
Epimerization
D and L isomerism

Question: In which of the indices of soil structure, the logarithm of mean diameter is used

Mean weight diameter
Geometric mean diameter
Structural coefficient
Dispersion coefficient

Question: In Wind Erosion Equation, E=f (I x K x C x L x V), I denotes

Soil erodibility index
Soil surface roughness
Climatic factor
Vegetative cover

📚 Related Quizzes & Practice Sets (सम्बन्धित प्रश्नोत्तरी)

📚 Related Exams & Practice Material (सम्बन्धित भर्ती परीक्षाएं)

RPSC AO & AAO Exams

RPSC ARO & AARO Papers

Rajasthan Pre PG Agriculture

NTA CUET PG Agriculture

IBPS AFO Specialist Officer

Cotton Corporation of India (CCI)

ICAR JRF/SRF Exams

N.R. Sunda Book MCQs

Soil Science (2021) — Agri Master Mind