List of top Physical Sciences Questions on Basics of Soil Science

Choose the correct sequence

Laterisation involves the following

Bray No. 1 is

The form of phosphorus in rock phosphate

Dolomite is a source of
(A). Calcium
(B). Magnesium
(C). Iron
(D). Sulphur
Choose the correct answer from the options given below:

Removal of lime in solution from upper to the lower part of the soil profile leads to the formation of -----

K fixing power of clay minerals follow the order
(A). Illite
(B). Montmorillonite
(C). Kaolinite
(D). Vermiculite
Choose the correct answer from the options given below:

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): Cations adsorbed on soil colloids determine aggregate formation.
Reason (R): Cations form electropositive links between electronegative soil particles.
In light of the above statements, choose the most appropriate answer from the options given below.

Parent material transported by wind is called

Given below are two statements:
Statement (I): 2:1 layer silicates consist of two tetrahedral sheets bound to either side of an octahedral sheet.
Statement (II): Two tetrahedral sheets of 2:1 layer silicates is bound to one side of an octahedral sheet in 2:1 layer silicates.
In light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).

Assertion (A) : Liming should not be done along with ammoniacal fertilizer applicaton.
Reason (R) : Liming leads to volatilisation loss of ammonia.

In light of the above statements, choose the correct answer from the options given below.

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).

Assertion (A) : Free silica occurs in soil s quartz and opal.
Reason (R) : Quartz consists of a continuous framework of silica tetrahedra.

In light of the above statements, choose the correct answer from the options given below.

Chemical weathering involving complete disintegration or modification in structure and composition of primary minerals

The most dominant exchangeable cation in the earth's crust

In the International Union of Soil Science classification system, fine sand has a size range of

Given below are two statements:
Statement (I): Acid sulfate soils can release harmful concentrations of heavy metals such as aluminum, iron, and manganese into the environment under acidic conditions.
Statement (II): Acid sulfate soils are typically characterized by their high organic matter content, which contributes to their fertility and ability to support diverse plant life.
In light of the above statements, choose the most appropriate answer from the options given below:

The process by which neutrons lose their kinetic energy through elastic collisions in the soil is known as

Given below are two statements:
Statement (I): The surface of a 'Pedon' is roughly polygonal.
Statement (II): The surface area of a pedon ranges from $1\text{ m}^2$ to $10\text{ m}^2$.
In light of the above statements, choose the most appropriate answer from the options given below:

Arrange the following forms of soil consistencies with decreasing soil wetness.
(A). Hard
(B). Friable/Soft
(C). Plastic
(D). Viscous
(E). Sticky
Choose the correct answer from the options given below:

Given below are two statements:
Statement (I): Hue is a measure of the chromatic composition of light.
Statement (II): The Munsell colour system is based on five principal hues.
In light of the above statements, choose the most appropriate answer from the options given below.