CSS Agriculture Questions & Answers - Part-2 - Set 13

1)   In respect of a sugarcane crop to be grown in an acidic soil having high P-fixing capacity by the fertilizer of choice would be:

a. Triple super phosphate
b. Finely ground rock phosphate
c. Coarse rock phosphate
d. Super phosphate
Answer  Explanation 

ANSWER: Finely ground rock phosphate

Explanation:
No explanation is available for this question!


2)   In soil where the negative charge is pH dependent, liming Increase CEC which results in an increase potassium by the soil colloids and ______ in soil:

a. Increases
b. Decreases
c. Little effect
d. None of these
Answer  Explanation 

ANSWER: Decreases

Explanation:
No explanation is available for this question!


3)   In the C:N ration of crop residues is more than 30, then:

a. Immobilization will take place
b. Mineralization will take place
c. Partial mineralization will take place
d. All of these
Answer  Explanation 

ANSWER: Immobilization will take place

Explanation:
No explanation is available for this question!


4)   In the diffusion, the movement of ions takes place:

a. From the region of higher concentration to the lower concentration
b. From the region of lower concentration to the higher concentration
c. Both are correct
d. None of the above
Answer  Explanation 

ANSWER: From the region of higher concentration to the lower concentration

Explanation:
No explanation is available for this question!


5)   In the P-determination by Olsen method, the ration of soil and extractant should be:

a. 1;20
b. 1;100
c. 1;10
d. 1;50
Answer  Explanation 

ANSWER: 1;20

Explanation:
No explanation is available for this question!


6)   Iron helps in chlorophyll synthesis because:

a. It is associated with chlorophyll
b. It is absent in chlorophyll
c. It activates enzyme nitrogen reductase
d. None of the above
Answer  Explanation 

ANSWER: It is associated with chlorophyll

Explanation:
No explanation is available for this question!


7)   Which one of the following sets of soil condition is more suitable for plant growth?

a. Sandy soils with high aeration and low water holding capacity
b. Clay soils with higher water holding capacity and low aeration
c. Organic soils with high water holding capacity and low aeration
d. Loamy soils with medium aeration and medium water holding capacity
Answer  Explanation 

ANSWER: Loamy soils with medium aeration and medium water holding capacity

Explanation:
No explanation is available for this question!


8)   Irrigation with sodic water increase the availability of:

a. Sodium
b. Molybdenum
c. Zinc
d. Chloride
Answer  Explanation 

ANSWER: Sodium

Explanation:
No explanation is available for this question!


9)   Is called father of pedology:

a. V.V. Dokuchaev
b. D.G. Vilensky
c. C.F. Marbut
d. K.D. Glinka
Answer  Explanation 

ANSWER: V.V. Dokuchaev

Explanation:
No explanation is available for this question!


10)   Is potassium takes parts in metabolic activity?

a. Yes
b. No
c. May or may not be
d. None of the above
Answer  Explanation 

ANSWER: Yes

Explanation:
No explanation is available for this question!


11)   K in igneous rocks is about:

a. 8.90%
b. 2.50%
c. 3.10%
d. 18.50%
Answer  Explanation 

ANSWER: 3.10%

Explanation:
No explanation is available for this question!


12)   K2 (Si5 Al2)Al4O2 (OH)4 is the formula of:

a. Muscovite
b. Biotite
c. Monmorillonite
d. Kaolinite
Answer  Explanation 

ANSWER: Muscovite

Explanation:
No explanation is available for this question!


13)   Kaolinite is a ______ type clay mineral:

a. 1;1
b. 2;1
c. 2;2
d. None of these
Answer  Explanation 

ANSWER: 1;1

Explanation:
No explanation is available for this question!


14)   Kharia disease of rice is diagnosed by:

a. Necrotic lesions
b. Dark reddish brown pigmentation
c. Yellowish spots on leaves
d. Black pinhead points on leaf
Answer  Explanation 

ANSWER: Dark reddish brown pigmentation

Explanation:
No explanation is available for this question!


15)   Land capability classes have:

a. 3 categories
b. 4 categories
c. 5 categories
d. 8 categories
Answer  Explanation 

ANSWER: 8 categories

Explanation:
No explanation is available for this question!


16)   Lignin like compounds in humus is about:

a. 45%
b. 20%
c. 30%
d. 70%
Answer  Explanation 

ANSWER: 45%

Explanation:
No explanation is available for this question!


17)   Lime is used for reclamation of:

a. Acidic soil
b. Sodic soil
c. Both (a) & (b)
d. None of these
Answer  Explanation 

ANSWER: Acidic soil

Explanation:
No explanation is available for this question!


18)   Limonite is formed by the process of:

a. Oxidation
b. Carbonation
c. Hydrolysis
d. None of these
Answer  Explanation 

ANSWER: Carbonation

Explanation:
No explanation is available for this question!


19)   Lithosphere contains about _______ sand stone and 0.25% limestone:

a. 0.75%
b. 0.25%
c. 2.25%
d. 10.25%
Answer  Explanation 

ANSWER: 0.75%

Explanation:
No explanation is available for this question!


20)   Lithosphere contains about:

a. 9%
b. 4%
c. 1%
d. 0.75%
Answer  Explanation 

ANSWER: 4%

Explanation:
No explanation is available for this question!


21)   Lithosphere has about ______ igneous rocks:

a. 75%
b. 80%
c. 72%
d. 95%
Answer  Explanation 

ANSWER: 95%

Explanation:
No explanation is available for this question!


22)   Mass flow of gases into the soil occurs due to the difference of:

a. Surface tension
b. Pressure gradient
c. Both of the above
d. None of the above
Answer  Explanation 

ANSWER: Pressure gradient

Explanation:
No explanation is available for this question!


23)   Number of master horizons is:

a. 4
b. 5
c. 3
d. 6
Answer  Explanation 

ANSWER: 5

Explanation:
No explanation is available for this question!


24)   Which one of the following pairs of elements and the mineral from which they are obtained is not correctly matched?

a. Sulphur - Pyrite
b. Boron - Siderite
c. Zinc - Calamine
d. Copper - Malachite
Answer  Explanation 

ANSWER: Boron - Siderite

Explanation:
No explanation is available for this question!


25)   Maximum absorption of water by roots takes place through the :

a. Zone of elongation
b. Zone of maturation
c. Root hair
d. Root cap
Answer  Explanation 

ANSWER: Root hair

Explanation:
No explanation is available for this question!


26)   Maximum population of microorganisms found in soils is of:

a. Bacteria
b. Fungi
c. Actinomycetes
d. Viruses
Answer  Explanation 

ANSWER: Bacteria

Explanation:
No explanation is available for this question!


27)   Mg and S are termed as:

a. Primary nutrients
b. Micronutrients
c. Ultra micronutrients
d. Secondary nutrients
Answer  Explanation 

ANSWER: Secondary nutrients

Explanation:
No explanation is available for this question!


28)   Mica is:

a. 1:1 type clay mineral
b. 2:1 type clay mineral, non expandable
c. 2:2 type clay mineral, L is present inside the layer
d. None of the above
Answer  Explanation 

ANSWER: 2:1 type clay mineral, non expandable

Explanation:
No explanation is available for this question!


29)   Microbial population of a soil in general

a. Decreases with depth
b. Increases with depth
c. Constant throughout the profile
d. No specific trend
Answer  Explanation 

ANSWER: Decreases with depth

Explanation:
No explanation is available for this question!


30)   Mineralization of N refers to the conversion of :

a. Organic form into inorganic form
b. Inorganic form into organic form
c. Organic form to nitrogenous compound
d. All of the above
Answer  Explanation 

ANSWER: Organic form into inorganic form

Explanation:
No explanation is available for this question!


31)   Moisture content from lower upper plastic limit is known as:

a. Sticky point
b. Field capacity
c. Plastic number
d. All of the above
Answer  Explanation 

ANSWER: Plastic number

Explanation:
No explanation is available for this question!


32)   Molybdenum is a component of:

a. Chlorophyll
b. Nitrogenase enzyme
c. Cell wall of plants
d. None of the above
Answer  Explanation 

ANSWER: Nitrogenase enzyme

Explanation:
No explanation is available for this question!


33)   Montmorillonite is following type of clay mineral:

a. 1;1
b. 2;2
c. 3;1
d. None of these
Answer  Explanation 

ANSWER: None of these

Explanation:
No explanation is available for this question!


34)   Montmorillinite, illite and kaolinite are:

a. Kinds of soil
b. Clay minerals
c. Kinds of protozoa present in soil
d. Kinds of soil in U.S.A.
Answer  Explanation 

ANSWER: Clay minerals

Explanation:
No explanation is available for this question!


35)   More than 2.3 value of nutrient index indicates:

a. Average productivity of soil
b. Adequate fertility of soil
c. Adequate productivity of soil
d. None of them
Answer  Explanation 

ANSWER: Adequate fertility of soil

Explanation:
No explanation is available for this question!


36)   Most of the plants are likely to suffer if the soil volume occupied by air is less than ______ per cent.

a. 20-25
b. 15-20
c. 12-15
d. 10-11
Answer  Explanation 

ANSWER: 20-25

Explanation:
No explanation is available for this question!


37)   Most resistant mineral present in soil is:

a. Mica
b. Hornblende
c. Quartz
d. None of above
Answer  Explanation 

ANSWER: Quartz

Explanation:
No explanation is available for this question!


38)   Muratt of potash contains:

a. 40%K2O
b. 36%K2O
c. 50%K2O
d. None of the above
Answer  Explanation 

ANSWER: None of the above

Explanation:
No explanation is available for this question!


39)   Mycorrhiza-infected plants show better ability of absorption of the nutreients, especially:

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

ANSWER: Phosphorus

Explanation:
No explanation is available for this question!


40)   Mycorrihiza-infected plants show better growth than uninfected plants, especially on:

a. Low fertility soils
b. High fertility soils
c. Marshy soils
d. Desert soils
Answer  Explanation 

ANSWER: Low fertility soils

Explanation:
No explanation is available for this question!


41)   N, P, K percent in cotton seed cake is:

a. 4, 1.9, 2
b. 1.9, 2, 4
c. 4, 1.9, 1.7
d. 1.7, 4, 1
Answer  Explanation 

ANSWER: 4, 1.9, 1.7

Explanation:
No explanation is available for this question!


42)   Na Ai Si2O8 is the formula of:

a. Anorthite
b. Albite
c. Mica
d. Illite
Answer  Explanation 

ANSWER: Albite

Explanation:
No explanation is available for this question!


43)   Which one of the following pairs is not correctly matched?

a. Expanding type clay minerals - Higher water holding capacity
b. Hight calcium content in soil - Iron chloride
c. Water inundated soils - High nitrogen mineralization
d. Sandy soils - Split application of fertilizers
Answer  Explanation 

ANSWER: Hight calcium content in soil - Iron chloride

Explanation:
No explanation is available for this question!


44)   Which one of the following pairs is correct?

a. Urea - 42%
b. DAP - 20%
c. (NH4)2 SO4 - 21.5%
d. MoP - 47.5%
Answer  Explanation 

ANSWER: DAP - 20%

Explanation:
No explanation is available for this question!


45)   Nitrate levels in drinking water above about ______ mg per litre are considered a human health hazard:

a. 5
b. 10
c. 15
d. 20
Answer  Explanation 

ANSWER: 10

Explanation:
No explanation is available for this question!


46)   Nitrification in the soil take place by:

a. Reduction process
b. Oxidation process
c. Biological oxidation
d. Both (a) and (b)
Answer  Explanation 

ANSWER: Biological oxidation

Explanation:
No explanation is available for this question!


47)   Nitrification is mainly carried out by:

a. Hetero-trophic organism
b. Photoauto-trophic organism
c. Chemoauto-trophic organism
d. None of the above
Answer  Explanation 

ANSWER: Chemoauto-trophic organism

Explanation:
No explanation is available for this question!


48)   Nitrogen is absorbed by the plants in the form:

a. Only as NO3-1
b. Only as NH4+
c. Both (a) & (b)
d. None of the above
Answer  Explanation 

ANSWER: Both (a) & (b)

Explanation:
No explanation is available for this question!


49)   Nitrogen is an essential nutrient element for the plants because:

a. It imparts early vigorous vegetative growth and dark green colour
b. It provides extensive root system
c. It strengthens straw and prevent lodging
d. It stimulates seed formation
Answer  Explanation 

ANSWER: It imparts early vigorous vegetative growth and dark green colour

Explanation:
No explanation is available for this question!


50)   Nitrogen is taken by the plants in the form of:

a. Elemental nitrogen
b. Nitrate
c. Nitrite
d. None of these
Answer  Explanation 

ANSWER: Nitrate

Explanation:
No explanation is available for this question!