Agriculture MCQs

Page No. 24

The EC: SAR and RSC values suggested by WAPDA for 3rd class irrigation water(C,S,R,) are____________________?


aECi:<1.5, SAR < 10 & RSC< 2.5

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bECi:>1.5, SAR > 10 & RSC> 2.5

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cECi:>1.5, SAR > 2.5

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dBoth A and B

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According to WAPDA, the ECe of the salt free soil should remain__________________?


a< 4 dsm-1

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bEqual to 4 dsm-1

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c4-8 dsm-1

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dNone of the above

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View Answer < 4 dsm-1

The exact chemical formula of DAP fertilizer is___________________?


a(NH2) HPO4

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bNH4H2PO4

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cNH4H2PO4

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dBoth A and C

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View Answer (NH2) HPO4

Nitrification is the microbial conversion of____________________?


aNH nitrogen the NO3 nitrogen in soil

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bNO2 to NO3 nitrogen in soil

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cNO3 nitrogen to NH4 + in soil

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dNone of the above

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Radiation can be detected by the blankening of photographic film or by using___________________?


aRatio autoanalyser

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bGM counter

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cNeutron probe

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dDosimeter

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View Answer GM counter

The complex fertilizer Nitrophos available in the market contains_____________________?


a25%N & 23% P2O3

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b46%N & 23% P2O3

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c23%N & 23% P2O3

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dNone of the above

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View Answer 23%N & 23% P2O3

Extraction of humic substance can be done by______________________?


aNaOH

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bNH4Cl

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cNH4OH

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dNone of the above

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View Answer NaOH

Who gave the defination of humic acid ?


aGapon

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bFelbeek

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cNeir

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dLiekig

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View Answer Felbeek

Which compound decay slowly______________________?


aAmino acid

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bLignin

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cFats

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dCellulose

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View Answer Lignin

Widely spread saprophytic fungi is________________________?


aBasidiomycetes

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bAscomycetes

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cEndospore

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dNone of the above

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View Answer Ascomycetes

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