Agriculture MCQs

Page No. 27

Percentage of N in Ammonium sulphate fertilizer is___________________?


a23


b35


c45


d21


View Answer 21

Chromium (Cr) is a____________________?


aMacro element


bSecondary element


cHeavy metal


dFree element


View Answer Heavy metal

The process of accumulation of excess quantity of nutrients in water causing O2 deficiency is known as_____________________?


aEutrophication


bNitriphication


cDenitriphication


dSedimentation


View Answer Eutrophication

Addition of sodium hexametaphosphate in soil for determination of soil texture causes__________________?


aCementing of soil particles


bAggregation of soil particles


cDispersion of soil particles


dAll of the above



The problem of soil crosion Thal and Cholistan is predominantly due to___________________?


aWind


bAir


cWater


dAll of the above


View Answer Wind

Na and k can be determined by the use of____________________?


aHydrometer


bFlame photometer


cSpectrophotometer


dAll of the above


View Answer Flame photometer

Gold is___________________?


aNative element


bSecondary element


cPrimary element


dHeavy metal


View Answer Native element

Salt-tolerant plants are called ____________________?


aGlycophytes


bXerophytes


cHalophytes


dAll of the above


View Answer Halophytes

Total salt affected soils of Pakistan are____________________?


a6.3 m ha


b5.0 m ha


c12.3 m ha


d10.5 m ha


View Answer 6.3 m ha

Cyclic salts are mostly of ______________________?


aSO4


bHCO3-


cCl–


dNone of the above


View Answer Cl–

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