CSS Agriculture Questions & Answers - Part-2 - Set 18

1)   The organic matter of soils is ordinarily obtained by multiplying the organic carbon content by:

a. 1.52
b. 1.62
c. 1.72
d. 1.82
Answer  Explanation 

ANSWER: 1.72

Explanation:
No explanation is available for this question!


2)   The organism, which can survive at the temperature 10 - 15?C, is called:

a. Psychrophylic
b. Mesophytic
c. Thermoduric
d. Thermophilic
Answer  Explanation 

ANSWER: Psychrophylic

Explanation:
No explanation is available for this question!


3)   The P2O5 content is P in the plough layer of 1 ha of soil containing 0.1%. P2O5 is:

a. 430 kg
b. 860 kg
c. 1290 kg
d. 1500 kg
Answer  Explanation 

ANSWER: 1500 kg

Explanation:
No explanation is available for this question!


4)   The pattern of occurrence of various soil taxonomic units on the detailed map is called:

a. Soil complex
b. Soil association
c. Soil variant
d. Soil phase
Answer  Explanation 

ANSWER: Soil complex

Explanation:
No explanation is available for this question!


5)   The percentage of soil water held with water potential - 15 bars is called as:

a. Hygroscopic coefficient
b. Wilting point
c. Field capacity
d. None of the above
Answer  Explanation 

ANSWER: Wilting point

Explanation:
No explanation is available for this question!


6)   The pH of a solution, containing 1 x 10-7 gm ion/ml. will be:

a. 6
b. 7
c. 8
d. 9
Answer  Explanation 

ANSWER: 7

Explanation:
No explanation is available for this question!


7)   The phosphate potential is denoted as:

a. 1/2 p Ca + pH2PO4
b. PH - 1/2 p Ca
c. RT in K+/?Ca++
d. p Ca + pH2PO4
Answer  Explanation 

ANSWER: 1/2 p Ca + pH2PO4

Explanation:
No explanation is available for this question!


8)   The plant nutrient when supplied in excess prolongs the growing period and delay crop maturity is:

a. Iron
b. Phosphorus
c. Nitrogen
d. Potassium
Answer  Explanation 

ANSWER: Nitrogen

Explanation:
No explanation is available for this question!


9)   The porosity will be more in soils having particle size of:

a. 0.005 mm
b. 0.02 mm
c. 2.0 mm
d. 0.002 mm
Answer  Explanation 

ANSWER: 0.002 mm

Explanation:
No explanation is available for this question!


10)   The positive and high value of redox potential indictes:

a. Reducing conditions
b. Strong oxidizing conditions
c. Equally reducing and oxidizing conditions
d. None of these
Answer  Explanation 

ANSWER: Strong oxidizing conditions

Explanation:
No explanation is available for this question!


11)   The presence of autotrophic mycorrhiza enhances the uptake of nutrients in general, but particularly of:

a. Iron
b. Molybdenum
c. Phosphrous
d. Nitrogen
Answer  Explanation 

ANSWER: Phosphrous

Explanation:
No explanation is available for this question!


12)   The prime objective of conservation tillage is:

a. Removal of plant residues
b. Complete retention of plant residues
c. Partial retention of plant residues
d. None of these
Answer  Explanation 

ANSWER: Partial retention of plant residues

Explanation:
No explanation is available for this question!


13)   The principal cation that affects the availability/fixation of phosphorus in alkali soils is:

a. Ca and Mg
b. Na and K
c. Fe and Al
d. None of the above
Answer  Explanation 

ANSWER: Fe and Al

Explanation:
No explanation is available for this question!


14)   The process of ammonification is often ______ by the use of pesticides:

a. Harmed
b. Harmed
c. Not affected
d. None of these
Answer  Explanation 

ANSWER: Harmed

Explanation:
No explanation is available for this question!


15)   The process responsible for the formation of sodic soil is:

a. Salinization
b. Alkalinization
c. Podzalization
d. Calcification
Answer  Explanation 

ANSWER: Alkalinization

Explanation:
No explanation is available for this question!


16)   Which of the following rotations is likely to leave soil richer in organic matter:

a. Continuous sorghum
b. Continuous maize
c. Continuous Oats
d. Maize-oats-clovers
Answer  Explanation 

ANSWER: Maize-oats-clovers

Explanation:
No explanation is available for this question!


17)   Zinc sulphate is generally taking more production under:

a. Saline soil
b. Acid soil
c. Water logged soils
d. Alkali soils
Answer  Explanation 

ANSWER: Alkali soils

Explanation:
No explanation is available for this question!


18)   The quantity of solid phase phosphorus that acts as reserve is often referred to as:

a. Intensity factor
b. Quality factor
c. Quantity factor
d. None of these
Answer  Explanation 

ANSWER: Quality factor

Explanation:
No explanation is available for this question!


19)   The quantity of urea needed for applying 115 kg nitrogen to maize will be (approx):

a. 100 kg
b. 250 kg
c. 100 kg
d. 150 kg
Answer  Explanation 

ANSWER: 150 kg

Explanation:
No explanation is available for this question!


20)   The ratio of thermal conductivity and heat capacity is known as:

a. Thermal diffusivity
b. Heat capacity
c. Thermal capacity
d. None of these
Answer  Explanation 

ANSWER: Thermal diffusivity

Explanation:
No explanation is available for this question!


21)   The relative amounts of air and water in the pore spaces:

a. Always remain constant
b. Fluctuate continuously
c. Half filled and half empty
d. All of the above
Answer  Explanation 

ANSWER: Fluctuate continuously

Explanation:
No explanation is available for this question!


22)   The relative proportions of sand silt and clay n the soil is known as:

a. Soil structure
b. Soil consistence
c. Soil texture
d. None of the above
Answer  Explanation 

ANSWER: Soil texture

Explanation:
No explanation is available for this question!


23)   The representtion of surface feature on map and their identification is called:

a. Soil legand
b. Soil map
c. Soil variant
d. None of them
Answer  Explanation 

ANSWER: Soil legand

Explanation:
No explanation is available for this question!


24)   The residual effect of ammonical nitrogenous fertilizer in soil is:

a. Alkaline
b. Neutral
c. Acidic
d. None of the above
Answer  Explanation 

ANSWER: Acidic

Explanation:
No explanation is available for this question!


25)   The rice crop tolerates submergence because:

a. The plant does not need O2
b. The plant has mechanism to transport O2 through leaves
c. Bacteria keep the rhizosphere oxidised
d. O2 penetrating to root zone through air movement is sufficient
Answer  Explanation 

ANSWER: The plant has mechanism to transport O2 through leaves

Explanation:
No explanation is available for this question!


26)   The rock 'Quartzite' is a:

a. Sedimentary rock
b. Igneous rock
c. Metamorphic rock
d. None of these
Answer  Explanation 

ANSWER: Metamorphic rock

Explanation:
No explanation is available for this question!


27)   The rock "Granite" is a:

a. Sedimentary rock
b. Metamorphic rock
c. Igneous rock
d. None of above
Answer  Explanation 

ANSWER: Igneous rock

Explanation:
No explanation is available for this question!


28)   The rock, which is formed by sedimentation of primary rock, is called:

a. Igneous rock
b. Metamorphic rock
c. Sedimentary rock
d. None of these
Answer  Explanation 

ANSWER: Sedimentary rock

Explanation:
No explanation is available for this question!


29)   The rock, which is formed under high temperature and pressure and by sudden geological tectonic movement, is called:

a. Igneous rock
b. Sedimentary rock
c. Metamorphic rock
d. None of these
Answer  Explanation 

ANSWER: Metamorphic rock

Explanation:
No explanation is available for this question!


30)   The saline soil can be managed by:

a. Addition of gypsum
b. Addition of lime
c. Addition of pyrite
d. Leaching of salts
Answer  Explanation 

ANSWER: Leaching of salts

Explanation:
No explanation is available for this question!


31)   The sodicity of water can be expressed by:

a. ECE
b. SAR
c. ESP
d. All of the above
Answer  Explanation 

ANSWER: SAR

Explanation:
No explanation is available for this question!


32)   The soil layer of maximum leaching is indicated by the symbol

a. A1
b. A2
c. A2
d. B2
Answer  Explanation 

ANSWER: A1

Explanation:
No explanation is available for this question!


33)   The soil solum includes:

a. A horizon
b. B horizon
c. A and B Horizon
d. None of the above
Answer  Explanation 

ANSWER: A and B Horizon

Explanation:
No explanation is available for this question!


34)   The soil temperature under field conditions can be altered by suitable cultural practice such as:

a. Irrigation
b. Mulching
c. Tillage
d. All of the above
Answer  Explanation 

ANSWER: All of the above

Explanation:
No explanation is available for this question!


35)   The soils of ______ zones can supply adequate potassium for many years even under irrigations:

a. Temperature
b. Humid
c. Arid
d. Sub-tropical
Answer  Explanation 

ANSWER: Arid

Explanation:
No explanation is available for this question!


36)   The species of Rhizobium present in the root nodules of soyabean is:

a. R. japonicum
b. R. leguminosarum
c. R. trifolii
d. R. phasedi
Answer  Explanation 

ANSWER: R. japonicum

Explanation:
No explanation is available for this question!


37)   The succulence and lodging in plants is due to 'excessive' application of:

a. Zinc
b. Phosphorus
c. Hydrogen
d. Potassium
Answer  Explanation 

ANSWER: Hydrogen

Explanation:
No explanation is available for this question!


38)   The sufficiency limit of iron is normally between:

a. 10-45 ppm
b. 50-150 ppm
c. 350-400 ppm
d. 500-750 ppm
Answer  Explanation 

ANSWER: 50-150 ppm

Explanation:
No explanation is available for this question!


39)   The systematic examination, description, classification and mapping of soil of an area is known as:

a. Soil survey
b. Soil mapping
c. Soil classification
d. All of the above
Answer  Explanation 

ANSWER: Soil survey

Explanation:
No explanation is available for this question!


40)   The technique used for minimizing the loss of nitrogen in paddy fields comprises:

a. Use of neem cake
b. Use of pre-incubated urea
c. Use of mud ball
d. All of these
Answer  Explanation 

ANSWER: All of these

Explanation:
No explanation is available for this question!


41)   The tendency of the young upper leaves to remain as the lower leaves yellow or die is an indication of nitrogen:

a. Immobility
b. Mobility
c. Stability
d. None of the above
Answer  Explanation 

ANSWER: Mobility

Explanation:
No explanation is available for this question!


42)   The texture of surface soil or surface horizon is called:

a. Soil phase
b. Soil type
c. Soil variant
d. None of them
Answer  Explanation 

ANSWER: Soil type

Explanation:
No explanation is available for this question!


43)   The tropical soils high in hydrous oxides of iron and aluminium embody ______ to torrential rains:

a. Susceptibility
b. Resistance
c. Both of these
d. None of these
Answer  Explanation 

ANSWER: Resistance

Explanation:
No explanation is available for this question!


44)   The unconsolidated material on the underlying rock is called:

a. Regolith
b. Soil
c. Solum
d. Earth
Answer  Explanation 

ANSWER: Regolith

Explanation:
No explanation is available for this question!


45)   The unit of fertilizer or any other growth factor which is necessary to produce the yield which in 50% of maximum possible yield is called:

a. Optimum unit
b. Standard unit
c. Baule unit
d. Fertilizer unit
Answer  Explanation 

ANSWER: Baule unit

Explanation:
No explanation is available for this question!


46)   The value above ______ ppm is associated with boron toxicity:

a. 150
b. 200
c. 250
d. 300
Answer  Explanation 

ANSWER: 250

Explanation:
No explanation is available for this question!


47)   The water held with a water potential greater than. 1/3 bar is known as:

a. Field capacity
b. Gravitational water
c. Available water
d. Unavailable water
Answer  Explanation 

ANSWER: Gravitational water

Explanation:
No explanation is available for this question!


48)   The weathered material transported by means of waters and deposited in river basins are termed as:

a. Alluvial
b. Marine
c. Lacustrine
d. None of above
Answer  Explanation 

ANSWER: Alluvial

Explanation:
No explanation is available for this question!


49)   The weathering causes:

a. Disintegration and decomposition of rocks
b. Disintegration and decomposition of rocks and minerals
c. Both (a) & (b)
d. None of these
Answer  Explanation 

ANSWER: Disintegration and decomposition of rocks and minerals

Explanation:
No explanation is available for this question!


50)   The zinc deficiency in rice causes disease:

a. Khaira
b. Bacterial leaf streak
c. Bacterial leaf blight
d. Sheath blight
Answer  Explanation 

ANSWER: Khaira

Explanation:
No explanation is available for this question!