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Extraction of humic substance can be done by______________________?
Related MCQs
Humic acid is soluble in__________?
In flood rice, snail feed on bacteria called__________?
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The most abundant metal in the earth’s crust and toxic to plants in low concentration is__________?
The salinity can be reduced by the application of__________?
Soil moisture and ET losses are__________?
Particular matter consists of__________?
Nitrogen gases are involved in__________?
A treeless artic plain is called as__________?
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While diluting acid always add__________?
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Boron concentration is irrigation water is considered safe only upto__________?
The chemical formula for Ammonium acctatc is__________?
The exact formula for sodium hexametaphosphate is__________?
Which silica mineral is present in soil in abundant quantity__________?
TSP contains__________?
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Antioxidant is used to reduce the process of__________?
Percentage of N in Ammonium ritract fertilizer is__________?
Sewage water consists of water and solids in the following percentage__________?
Clear water with organic matter or sediment and minimum biological activity is known as__________?
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Rocks formed from molten magma are called__________?
Material deposited by the wind is called__________?
The wearing away of the land surface by wind, water, ice or other geological agents is called__________?
The science of growing terrestrial plants in an aerated solution is known as__________?
Electrical conductivity of saturated paste is written as__________?
Na2CO3 salts is__________?
Accumulation of soluble salts root zone is known as__________?
The atmospheric layer lies closest to the earth surface is known as__________?
Algal photosynthesis increases pH of water and releases__________?
Primary air pollution is__________?
Perfect hardness of any mineral is determined by__________?
The water loss through transpiration from vegetative and evaporation from soil surface is known as__________?
Soil structure without aggregation is known as__________?
The device used for the measurement of positive pressure potential of soil water is known as__________?
The safe limit of No2 in drinking water is__________?
The particlesw density of a mineral soil is about__________?
Deep percolation from a soil profile is generally measured by a device known as__________?
Auxins promote__________?
The chemical formula of Dolomite is__________?
The toxicity level of Zn (mg/kg) in plants suggested by some workers is__________?
The exact formula for calculating the base saturation percentage is__________?
The EC: SAR and RSC values suggested by WAPDA for 3rd class irrigation water(C,S,R,) are__________?
According to WAPDA, the ECe of the salt free soil should remain__________?
The exact chemical formula of DAP fertilizer is__________?
Nitrification is the microbial conversion of__________?
Extraction of humic substance can be done by______________________?
A. NaOH
B. NH4Cl
C. NH4OH
D. None of the above
Correct Answer:
NaOH
✔
Last Updated:
July 01, 2019