Agriculture MCQs

Page No. 23

The water loss through transpiration from vegetative and evaporation from soil surface is known as__________________?


aEvaptranspiration


bEvaporation


cTranspiration


dGuttation


View Answer Evaptranspiration

Soil structure without aggregation is known as____________________?


aPlaty


bGranular


cMassive


dboth B & C


View Answer Massive

The device used for the measurement of positive pressure potential of soil water is known as_________________?


aLysimeter


bTensiometer


cPiezometer


dBarometer


View Answer Piezometer

The safe limit of No2 in drinking water is_____________________?


a10 mg L-1


b15 mg L-1


c20 mg L-1


dNone of the above


View Answer 10 mg L-1

The particlesw density of a mineral soil is about____________________?


a2750 Kg m-3


b2550 Kg m-3


c2650 Kg m-3


dNone of the above


View Answer 2650 Kg m-3

Deep percolation from a soil profile is generally measured by a device known as_____________________?


aHydrometer


bLysimeter


cThermometer


dTensiometer


View Answer Lysimeter

Auxins promote___________________?


aCell elongation


bCell division


cBoth A and B


dNone of the above


View Answer Cell elongation

The chemical formula of Dolomite is________________?


aCaMg (CO3)2


bMgCO3


cCaCO3


dNone of the above


View Answer CaMg (CO3)2

The toxicity level of Zn (mg/kg) in plants suggested by some workers is___________________?


a> 50 mg kg-1


b> 10 mg-1


c> 400 mg kg-1


dNone of the above


View Answer > 400 mg kg-1

The exact formula for calculating the base saturation percentage is_____________________?


aBas saturation percentage = CA+Mg+Na / CEC x 100


bBas saturation percentage = /CEC / CA+Mg+Na x 100


cBas saturation percentage = /CEC / CA+Mg x 100


dNone of the above



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