The transfer of minerals from top soil to subsoil through soil-water is called? (1) Percolation (2) Conduction (3) Leaching (4) Transpiration

The transfer of minerals from top soil to subsoil through soil-water is called? (1) Percolation (2) Conduction (3) Leaching (4) Transpiration
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(3) Leaching Explanation: Leaching refers to the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. As water from rain, flooding, or other sources seeps into the ground, it can dissolve chemicals and carry them into the underground water supply. Mineral nutrients lost from the soil system become unavailable for plant uptake.
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The transfer of minerals from top soil to subsoil through soil-water is called? (1) Percolation (2) Conduction (3) Leaching (4) Transpiration

Description : The transfer of minerals from top soil to subsoil through soil-water is called? (1) Percolation (2) Conduction (3) Leaching (4) Transpiration

Last Answer : (3) Leaching Explanation: Leaching refers to the loss of water-soluble plant nutrients from the soil, due to rain and irrigation.

The transfer of minerals from top soil to subsoil through soil-water is called? (1) Percolation (2) Conduction (3) Leaching (4) Transpiration

Description : The transfer of minerals from top soil to subsoil through soil-water is called? (1) Percolation (2) Conduction (3) Leaching (4) Transpiration

Last Answer : Leaching

Tea percolation employs (A) Liquid-liquid extraction(B) Leaching(C) Absorption(D) None of these

Description : Tea percolation employs (A) Liquid-liquid extraction (B) Leaching (C) Absorption (D) None of these

Last Answer : (B) Leaching

Leaching of coarse solid lumps is also termed as(A) Decoction (B) Dissolution (C) Percolation (D) Agitation and settling

Description : Leaching of coarse solid lumps is also termed as (A) Decoction (B) Dissolution (C) Percolation (D) Agitation and settling

Last Answer : (C) Percolation

Piping in a soil mass is a) Erosion of subsoil by the high velocities of flow of water through it when such velocities exceed a certain limit* b) Caused due to very low exit gradient c) Due to continuous passage of water through a series of well connected pores d) Due to loss of the strength of cohesion less soil because of upward flow of of water

Description : Piping in a soil mass is a) Erosion of subsoil by the high velocities of flow of water through it when such velocities exceed a certain limit* b) Caused due to very low exit gradient c) ... connected pores d) Due to loss of the strength of cohesion less soil because of upward flow of of water

Last Answer : a) Erosion of subsoil by the high velocities of flow of water through it when such velocities exceed a certain limit*

Soil which is prone to intensive leaching due to rain is called- (1) Laterite (2) Black (3) Alluvial (4) Red

Description : Soil which is prone to intensive leaching due to rain is called- (1) Laterite (2) Black (3) Alluvial (4) Red

Last Answer : (1) Laterite Explanation: Leaching refers to the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. Laterite soils are formed soils under conditions of high temperature and heavy rainfall with alternate wet and dry periods. They are leached and are, thus, less fertile.

The formation of laterite soil is mainly due to: (a) weathering (b) erosion (c) leaching (d) deposition

Description : The formation of laterite soil is mainly due to: (a) weathering (b) erosion (c) leaching (d) deposition

Last Answer : Ans: (c)

Laterite soil develops as a result of : (1) deposits of alluvial (2) deposits of loess (3) leaching (4) continued vegetation cover

Description : Laterite soil develops as a result of : (1) deposits of alluvial (2) deposits of loess (3) leaching (4) continued vegetation cover

Last Answer : (3) leaching Explanation: Laterite has been derived from the Latin word 'later' which means brick. The laterite soil develops in areas with high temperature and heavy rainfall. This is ... of the micro organisms, particularly the decomposers, like bacteria, get destroyed due to high temperature.

Soil formed by leaching and oxidation is – (1) Black soil (2) Laterite soil (3) Red soil (4) Montane soil

Description : Soil formed by leaching and oxidation is – (1) Black soil (2) Laterite soil (3) Red soil (4) Montane soil

Last Answer : (2) Laterite soil Explanation: Laterisation is a form of chemical weathering that • involves oxidation, carbonation and leaching. This natural process results in the formation of Laterite soils.

Subsoil plough is useful for — a. for deep ploughing b. to break hard pan of soil c. Shallow ploughin

Description : Subsoil plough is useful for — a. for deep ploughing b. to break hard pan of soil c. Shallow ploughin

Last Answer : b. to break hard pan of soil

Which one among the following is not a reason for practising tank irrigation in the Peninsular India? [NDA 2011] (a) The undulating relief and hard rocks (b) little percolation of rain water due to impervious rock structure (c) Most of the rivers of Peninsular India are perennial (d) There are many streams which become torrential during rainy season

Description : Which one among the following is not a reason for practising tank irrigation in the Peninsular India? [NDA 2011] (a) The undulating relief and hard rocks (b) little percolation of rain ... of Peninsular India are perennial (d) There are many streams which become torrential during rainy season

Last Answer : Ans: (c)

Recharging of water table depends on – (1) amount of rainfall (2) relief of the area (3) vegetation of the area (4) amount of percolation

Description : Recharging of water table depends on – (1) amount of rainfall (2) relief of the area (3) vegetation of the area (4) amount of percolation

Last Answer : (2) relief of the area Explanation: The water table may vary due to seasonal changes in precipitation, evapotranspiration, topography and structural geology. In undeveloped regions with permeable soils that ... the groundwater away and release the pressure in the aquifer for the relief of the area.

Which of the following processes are associated with plants during dark period? (1) Photosynthesis and respiration (2) Respiration and transpiration (3) Transpiration and conduction (4) Conduction and respiration

Description : Which of the following processes are associated with plants during dark period? (1) Photosynthesis and respiration (2) Respiration and transpiration (3) Transpiration and conduction (4) Conduction and respiration

Last Answer : (4) Conduction and respiration Explanation: Conduction is the process by which vital nutrients are transported to the different parts of a plant. This process is independent of the light factor ... the photosynthesis process cannot be happening without sun, so it exhales the carbon-dioxide itself.

Which of the following processes are associated with plants during dark period? (1) Photosynthesis and respiration (2) Respiration and transpiration (3) Transpiration and conduction (4) Conduction and respiration

Description : Which of the following processes are associated with plants during dark period? (1) Photosynthesis and respiration (2) Respiration and transpiration (3) Transpiration and conduction (4) Conduction and respiration

Last Answer : Conduction and respiration

Veins seen in the leaves, serve the function of (1) Photosynthesis (2) Transpiration (3) Storage (4) Conduction

Description : Veins seen in the leaves, serve the function of (1) Photosynthesis (2) Transpiration (3) Storage (4) Conduction

Last Answer : Conduction

Which one of the following processes during decomposition is correctly described? (a) Catabolism – Last step in the decomposition under fully anaerobic condition (b) Leaching – Water soluble inorganic nutrients rise to the top layers of soil (c) Fragmentation – Carried out by organisms such as earthworm (d) Humification – Leads to the accumulation of a dark coloured substance humus which undergoes microbial action at a very fast rate.

Description : Which one of the following processes during decomposition is correctly described? (a) Catabolism - Last step in the decomposition under fully anaerobic condition (b) Leaching - Water soluble inorganic ... of a dark coloured substance humus which undergoes microbial action at a very fast rate.

Last Answer : (c) Fragmentation – Carried out by organisms such as earthworm

The high density of soil placed in a fill is desired in order to a) Increase its shear resistance* b) Reduce its shear resistance c) Promote future settlements d) Decrease percolation through the fill.

Description : The high density of soil placed in a fill is desired in order to a) Increase its shear resistance* b) Reduce its shear resistance c) Promote future settlements d) Decrease percolation through the fill.

Last Answer : a) Increase its shear resistance*

Salinization occurs when the irrigation water accumulated in the soil evaporates, leaving behind salts and minerals. What are the effects of salinization on the irrigated land? [CSAT 2011] (a) It greatly increases the crop production (b) It makes some soils impermeable (c) It raises the water table (d) It fills the air spaces in the soil with water

Description : Salinization occurs when the irrigation water accumulated in the soil evaporates, leaving behind salts and minerals. What are the effects of salinization on the irrigated land? [CSAT 2011] (a) It greatly increases ... c) It raises the water table (d) It fills the air spaces in the soil with water

Last Answer : Ans: (b)

Pudding is done to— (A) Reduce percolation of water (B) Pulverise and levelling soil (C) Kill weeds (D) All of the above

Description : Pudding is done to— (A) Reduce percolation of water (B) Pulverise and levelling soil (C) Kill weeds (D) All of the above

Last Answer : (D) All of the above

Downward entry and movement of water in soil surface is — a. Percolation b. Infiltration c. Permeability d. None of these

Description : Downward entry and movement of water in soil surface is — a. Percolation b. Infiltration c. Permeability d. None of these

Last Answer : b. Infiltration

Puddling is used to a) Reduce percolation of water b) Pulverize soil c) Level the field d) Compact the soil

Description : Puddling is used to a) Reduce percolation of water b) Pulverize soil c) Level the field d) Compact the soil

Last Answer : ans a

Puddling is done to: A. Reduce percolation of water B. Kill weeds C. Pulverize soil D. Level the field

Description : Puddling is done to: A. Reduce percolation of water B. Kill weeds C. Pulverize soil D. Level the field

Last Answer : A. Reduce percolation of water

Puddling is done to: a) Reduce percolation of water b) Kill weeds c) Pulverise soil d) Level the fields

Description : Puddling is done to: a) Reduce percolation of water b) Kill weeds c) Pulverise soil d) Level the fields

Last Answer : a) Reduce percolation of water

Pudding is done to a) Reduce percolation of water b) Pulverise and levelling soil c) Kill weeds D) All of the above

Description : Pudding is done to a) Reduce percolation of water b) Pulverise and levelling soil c) Kill weeds D) All of the above 

Last Answer : D) All of the above 

Which soil would have the lowest percolation rate? -Other

Description : Which soil would have the lowest percolation rate? -Other

Last Answer : clayey soil would have the lowest percolation rate

which soil have the highest percolation rate ? -Other

Description : which soil have the highest percolation rate ? -Other

Last Answer : sandy soil would have the highest percolation rate.

What is Percolation rate of red soil?

Description : What is Percolation rate of red soil?

Last Answer : 2

The tillage implement used to break subsoil is

Description : The tillage implement used to break subsoil is

Last Answer : Ans.Chisel plough

The hp required to operate subsoil plough a) 10-20hp b) 20-30hp c) 60-100hp d) 140-200hp

Description : The hp required to operate subsoil plough a) 10-20hp b) 20-30hp c) 60-100hp d) 140-200hp

Last Answer :  60-100hp

Solar energy is received by the earth through – (1) conduction (2) radiation (3) convection (4) refraction

Description : Solar energy is received by the earth through – (1) conduction (2) radiation (3) convection (4) refraction

Last Answer : (2) radiation Explanation: In physics, radiation is a process in which energetic particles or energetic, waves travel through vacuum, or through mattercontaining media that are not required for ... Earth receives 174 petawatts (PW) of incoming solar radiation (insolation) at the upper atmosphere.

Chief function of phloem is conduction of: (a) Food (b) Minerals (c) Water (d) Air

Description : Chief function of phloem is conduction of: (a) Food (b) Minerals (c) Water (d) Air

Last Answer : Ans. ((a))

Identify the incorrect statement. (a) Heartwood does not conduct water but gives mechanical support. (b) Sapwood is involved in conduction of water and minerals from root to leaf. (c) Sapwood is the innermost secondary xylem and is lighter in colour. (d) Due to deposition of tannins, resins, oils, etc., heartwood is dark in colour.

Description : Identify the incorrect statement. (a) Heartwood does not conduct water but gives mechanical support. (b) Sapwood is involved in conduction of water and minerals from root to leaf. (c) Sapwood is the innermost ... . (d) Due to deposition of tannins, resins, oils, etc., heartwood is dark in colour.

Last Answer : (c) Sapwood is the innermost secondary xylem and is lighter in colour

Transfer of heat energy from a heater coil to the cooking vessel takes place through the process of- (1) Convection only (2) Conduction and convection only (3) Radiation and convection only (4) Convection, conduction and radiation

Description : Transfer of heat energy from a heater coil to the cooking vessel takes place through the process of- (1) Convection only (2) Conduction and convection only (3) Radiation and convection only (4) Convection, conduction and radiation

Last Answer : (3) Radiation and convection only Explanation: Conduction is the transfer of heat energy by direct contact, convection is the movement of heat by actual motion of matter; radiation is the transfer of energy with the help of electromagnetic waves.

Heat transfer in the laminar sub-layer in case of a liquid flowing through a pipe, is mostly by (A) Eddies current (B) Conduction (C) Convection (D) None of these

Description : Heat transfer in the laminar sub-layer in case of a liquid flowing through a pipe, is mostly by (A) Eddies current (B) Conduction (C) Convection (D) None of these

Last Answer : (B) Conduction

Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is (A) Thin walled having the value of Ao Ai /< 2 (B) Thick walled (C) Having the value of Ao /Ai > 2 (D) Both (B) and (C)

Description : Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is (A) Thin walled having the value of Ao Ai /< 2 (B) Thick walled (C) Having the value of Ao /Ai > 2 (D) Both (B) and (C)

Last Answer : (A) Thin walled having the value of Ao Ai /< 2

Heat transfer by conduction in the turbulent core of a fluid flowing through a heated pipe is negligible, if the value of Prandtl number is (A) 0.2 (B) 0.4 (C) 0.6 (D) 0.8

Description : Heat transfer by conduction in the turbulent core of a fluid flowing through a heated pipe is negligible, if the value of Prandtl number is (A) 0.2 (B) 0.4 (C) 0.6 (D) 0.8

Last Answer : (C) 0.6

The process by which nutrient chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil (a) mulching (b) desertification (c) incineration (d) leaching

Description : The process by which nutrient chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil (a) mulching (b) desertification (c) incineration (d) leaching

Last Answer : (d) leaching

Reclamation of saline soil which of the following practice is followed ? — a. Adequate drainage b. By good quality irrigation water c. Leaching of salts below root zone d. All of these

Description : Reclamation of saline soil which of the following practice is followed ? — a. Adequate drainage b. By good quality irrigation water c. Leaching of salts below root zone d. All of these

Last Answer : d. All of these

Puddling is done to achieve : a. Soft soil bed b. Non leaching of water c. Size reduction of clods d. Conservation of moisture

Description : Puddling is done to achieve : a. Soft soil bed b. Non leaching of water c. Size reduction of clods d. Conservation of moisture

Last Answer : b. Non leaching of water

The process by which nutrient chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil a) Mulching b) Desertification c) Incineration d) Leaching

Description : The process by which nutrient chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil a) Mulching b) Desertification c) Incineration d) Leaching

Last Answer : d) Leaching

Soil which is prone to intensive leaching due to rain is called (1) Laterite (2) Black (3) Alluvial (4) Red

Description : Soil which is prone to intensive leaching due to rain is called (1) Laterite (2) Black (3) Alluvial (4) Red

Last Answer : Laterite

Commercial flower crops are sometimes watered to cause leaching. This means: a. Watering to spread fertilizer nutrients more evenly throughout the plant root system b. Watering to remove excess soluble salts from the growing medium c. Watering only to wet the top 1/3 of the growing medium d. Watering by subsurface methods

Description : Commercial flower crops are sometimes watered to cause leaching. This means: a. Watering to spread fertilizer nutrients more evenly throughout the plant root system b. Watering to remove excess soluble salts from ... only to wet the top 1/3 of the growing medium d. Watering by subsurface methods

Last Answer : Watering to remove excess soluble salts from the growing medium

Atmospheric temperature increasing at the higher altitudes is called – (1) Radiation (2) Inversion (3) Conduction (4) Convection

Description : Atmospheric temperature increasing at the higher altitudes is called – (1) Radiation (2) Inversion (3) Conduction (4) Convection

Last Answer : (2) Inversion Explanation: The reversal of the normal behaviour of temperature in the troposphere in which a layer of cool air at the surface is overlain by a layer of warmer ... as temperature inversion. Inversions play an important role in determining cloud forms, precipitation, and visibility.

Name the soil which : (i) is good for the cultivation of cashew nuts. (ii) covers almost all of West Bengal. (iii) is a result of leaching. -Geography

Description : Name the soil which : (i) is good for the cultivation of cashew nuts. (ii) covers almost all of West Bengal. (iii) is a result of leaching. -Geography

Last Answer : (i) Laterite soil. (ii) Alluvial soil. (iii) Laterite soil.

Which soil type is the result of intense leaching due to heavy rainfall ? -SST 10th

Description : Which soil type is the result of intense leaching due to heavy rainfall ? -SST 10th

Last Answer : Laterite soil.

The problem of leaching of the soil is more pronounced in the areas how rainfall is there?

Description : The problem of leaching of the soil is more pronounced in the areas how rainfall is there?

Last Answer : Heavy

Migration of salt from sub-soil to the surface of a canal (a)Leaching. (b) Effervescence. (c)Fertilization. (d) All of the above.

Description : Migration of salt from sub-soil to the surface of a canal (a)Leaching. (b) Effervescence. (c)Fertilization. (d) All of the above.

Last Answer : (b) Effervescence

Soil formed by leaching and oxidation is (1) Black soil (2) Laterite soil (3) Red soil (4) Montane soil

Description : Soil formed by leaching and oxidation is (1) Black soil (2) Laterite soil (3) Red soil (4) Montane soil

Last Answer : Laterite soil

Laterite soil develops as a result of : (1) deposits of alluvial (2) deposits of loess (3) leaching (4) continued vegetation cover

Description : Laterite soil develops as a result of : (1) deposits of alluvial (2) deposits of loess (3) leaching (4) continued vegetation cover

Last Answer : leaching

In the stratosphere, why does temperature increase with increasing height? (a) Conduction. (b) Convection. (c) Greater absorption of ultraviolet radiation at the top of the strato- sphere. (d) The pressure and density rapidly decrease as you go up through the strato- sphere, thus the ideal gas law requires temperature to increase too.

Description : In the stratosphere, why does temperature increase with increasing height? (a) Conduction. (b) Convection. (c) Greater absorption of ultraviolet radiation at the top of the strato- sphere. (d ... you go up through the strato- sphere, thus the ideal gas law requires temperature to increase too.

Last Answer : Greater absorption of ultraviolet radiation at the top of the strato- sphere.