List of top Physical Sciences Questions

Following are four stages of gully development. Arrange these in order.
(A). Healing stage
(B). Development stage
(C). Stabilization stage
(D). Formation stage
Choose the correct answer from the options given below:

Given below are two statements:
Statement (I): Application of nitrogenous fertilizer leads to $\text{N}_2\text{O}$ emission from the soil.
Statement (II): Nitrous oxide is present in large quantities compared to methane in the atmosphere and therefore processes higher potent danger.
In light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements, one is labeled as Assertion (A), and the other one labeled as Reason (R).
Assertion (A): Darcy's law is valid for a steady and stationary flow process in the soil.
Reason (R): In a steady flow condition, potential and gradient at every point in the flow path remain constant.
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): 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:

Given below are two statements, one is labeled as Assertion (A), and the other one is labeled as Reason (R).
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.
In light of the above statements, choose the most appropriate answer from the options given below:

The soil hydraulic head is expressed by
(A). Potential energy per unit mass of soil water.
(B). Potential energy per unit volume of soil water.
(C). Potential energy per unit weight of soil water.
(D). Height of standing water on the soil surface.
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.

The Indian Remote Sensing Satellite (IRS)
(A). Look over a fixed point at the same local time
(B). Are at a low altitude ($<1000$ km)
(C). Are used for weather forecasting
(D). Have large agricultural and natural resources application
(E). Provide service to telecommunications
Choose the correct answer from the options given below:

Which of the following statement(s) 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 the permeability of its porous cup.
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): Cover cropping is a common practice in organic farming systems.
Reason (R): Cover crops help to improve soil health, suppress weeds, and enhance biodiversity, aligning with the principles of organic agriculture
In light of the above statements, choose the most appropriate answer from the options given below.

The organic certificate of an organic farm is valid for

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): Organic farming promotes environmental sustainability
Reason (R): Organic farming avoids the use of synthetic pesticides and fertilizers, which helps preserve soil health, conserve water resources, and reduce pollution of air and water bodies.
In light of the above statements, choose the most appropriate answer from the options given below.

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

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:

Conversion period of an organic farm is generally (for perennial crop)

Certification is essential for authenticating organic products because
(A). A third-party certification agency monitoring the organic production system
(B). Organic products are produced by following NPOP guidelines
(C). Organic farmers are dedicated in cultivation practices
(D). Potentiality of marketing of organic products are increasing
Choose the correct answer from the options given below:

Nutrient supply in organic farming is based on feeding the soil not feeding the crop -Justify
(A). In organic management nutrient sources are mostly on-farm produced and naturally occurred not off-farm external inputs
(B). Soil fertility is maintained by a variety of means like crop rotation, organic mulching, cover crop, etc.
(C). Recycling and reuse of products and by-products of different components of an organic farm
(D). Nutrients enrichment of soil by encouraging natural cycles and soil biological activity
Choose the correct answer from the options given below:

Given below are two statements, one is labeled as Assertion (A), and other one labeled as Reason (R).
Assertion (A): The break of monsoon at critical stages for soil moisture stress leads to a reduction in yield.
Reason (R): Only when the break of monsoon exceeds 15 days duration or more.
In light of the above statements, choose the most appropriate answer from the options given below.

When rainfall is inadequate to meet the evapotranspiration losses, usually occurs in Humid Regions.
(A). Invisible drought
(B). Contingent drought
(C). Meteorological drought
(D). Permanent drought
Choose the correct answer from the options given below:

Given below are two statements:
Statement (I): Single superphosphate, double superphosphate, triple superphosphate are mono-calcium phosphate.
Statement (II): Mono calcium phosphates are water soluble and thus have high leaching losses.
In light of the above statements, choose the most appropriate answer from the options given below.

Arrange the following factors affecting irrigation water quality in agriculture in the correct sequence:
(A). Salinity
(B). pH
(C). Sediment content
(D). Chemical contaminants
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) : Waterlogged soil typically displays a grayish color due to reduced oxygen levels.
Reason (R) : Upland soil usually maintains a reddish or brownish hue due to its well-aerated nature.

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

Arrange the following in increasing the amount of nitrogen in the fertilizers:
(A). Ammonium sulphate,
(B). Ammonium nitrate,
(C). Ammonium chloride,
(D). Calcium ammonium nitrate

Choose the correct answer from the options given below:

Arrange the following consequences of submergence in the soil in the correct sequence:
(A). Depletion of soil oxygen,
(B). Accumulation of toxic substances like hydrogen sulfide,
(C). Loss of beneficial soil organisms,
(D). Increased soil pH in acidic soil

Choose the correct answer from the options given below: