Agriculture MCQs

Page No. 27

Percentage of N in Ammonium sulphate fertilizer is___________________?


a23

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b35

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c45

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d21

✓


View Answer 21

Chromium (Cr) is a____________________?


aMacro element

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bSecondary element

✖


cHeavy metal

✓


dFree element

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View Answer Heavy metal

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


aEutrophication

✓


bNitriphication

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cDenitriphication

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dSedimentation

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View Answer Eutrophication

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


aCementing of soil particles

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bAggregation of soil particles

✖


cDispersion of soil particles

✓


dAll of the above

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


aWind

✓


bAir

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cWater

✖


dAll of the above

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View Answer Wind

Na and k can be determined by the use of____________________?


aHydrometer

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bFlame photometer

✓


cSpectrophotometer

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dAll of the above

✖


View Answer Flame photometer

Gold is___________________?


aNative element

✓


bSecondary element

✖


cPrimary element

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dHeavy metal

✖


View Answer Native element

Salt-tolerant plants are called ____________________?


aGlycophytes

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bXerophytes

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cHalophytes

✓


dAll of the above

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View Answer Halophytes

Total salt affected soils of Pakistan are____________________?


a6.3 m ha

✓


b5.0 m ha

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c12.3 m ha

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d10.5 m ha

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View Answer 6.3 m ha

Cyclic salts are mostly of ______________________?


aSO4

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bHCO3-

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cCl–

✓


dNone of the above

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View Answer Cl–

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