List of top Questions asked in Indian Council of Agricultural Research All India Entrance Examination for Admission

Statement (I): Hue is a measure of the chromatic composition of light.
Statement (II): The Munsell colour system is based on five principal hues.

The height of the capillary rise of water in the 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 the tube
(D) Inversely proportional to the surface tension of water
Choose the correct answer from the options given below:

Assertion (A): Cations adsorbed on soil colloids determine aggregate formation.
Reason (R): Cations form electropositive links between electronegative soil particles.

Arrange the following factors affecting irrigation water quality in agriculture in the correct sequence:
(A) Salinity
(B) pH
(C) Sediment content
(D) Chemical contaminants

Assertion (A): Implementing agroforestry practices helps in soil conservation.
Reason (R): Agroforestry combines the cultivation of trees and crops on the same land, which reduces soil erosion by providing ground cover and enhancing soil structure through the roots of trees.

Microorganisms that oxidise ammonia to nitrite
(A) Nitrosomonas
(B) Thiobacillus
(C) Nitrobacter
(D) Nitrosolobus
Choose the correct answer from the options given below:

Arrange the following in decreasing order of Basal Spacing:
(A) Kaolinite
(B) Montmorillonite
(C) Illite
(D) Vermiculite
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The parameters of N use efficiency are
(A) Apparent N. recovery
(B) Agronomic efficiency
(C) Production efficiency
(D) Physiological N efficiency
Choose the correct answer from the options given below:

Dolomite is a source of
(A) Calcium
(B) Magnesium
(C) Iron
(D) Sulphur
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Elements associated with nitrogenase enzyme in biological nitrogen fixation
(A) Molybdenum
(B) Iron
(C) Copper
(D) Nickel
Choose the correct answer from the options given below:

Assertion (A): Equilibrium water content in soil at a certain matric potential is higher when the soil is under the drying process (desorption) compared to when the soil is under the wetting process (sorption).
Reason (R): The contact angle between water and the soil solid phase is greater during the imbibition of water than during drainage.