Q.1 Titratable acidity is also known as_________.
Reserve acidity Active acidity Total acidity
Q.2 ________ ion synthesis chlorophyll in plant.
B Mg Fe
Q.3 ________ is a high acid tolerant crop.
Wheat rice Tomato
Q.4 The deficiency of ______ ion causes marginal burning of leaves.
N P K
Q.5 The dominant salt in non-saline alkali soil is_________.
CaCO3 NaCl Na2CO3
Q.6 The chemical formula of gypsum is__________.
CaSO4 CaCl2.2H2O CaSO4.2H2O
Q.7 For the replacement of 1 me of exch. Na, it requires_____ kg gypsum/ha.
89 172 1926.4
Q.8 ________ weed has been found very suitable for reclamation of alkali soil.
Argemone mexicana Cyprus rotundus Cynalon cactyolane
Q.9 _________ is sensitive to 10-20 ESP levels in soil.
wheat beans Carrot
Q.10 Most suitable option for increasing efficiency of nitrogenous fertilizers is called___________.
split application deep placement band placement
Q.11 The green manure crop should be turned in to the soil at stage.
vegetative maturity flowering
Q.12 The solid portion of sewage is known as_______.
FYM sludge compost
Q.13 Nitrification rate of castor cake is very slow due to_________.
Saponin Nimbidin Ricin
Q.14 Poudrette is prepared from_______.
night soil blood meal sludge
Q.15 On an average, FYM contains__________% Nitrogen.>
0.50 0.70 0.20
Q.16 In which form nitrogen absorbs by paddy in early stages?
NO3 NH4 NO2
Q.17 Urine of all animals contains more percentage of elements as compared to the dung portion.
N & K20 Ca &P2O5 Mg & N
Q.18 The biuret content (%) in urea should not exceed.
2.0 1.5 3.0
Q.19 Town compost contain________(%) N.
1.4 1.0 2.5
Q.20 Gas is generated due to anaerobic fermentation of organic material.
Methane CO2 Oxygen
Q.21 Chief compound for most of the nitrogenous fertilizers are_________.
NH2 NH3 NO3
Q.22 Denitrification of nitrate fertilizers takes place under the condition.
saline waterlogged aerobic
Q.23 Addition of which increases the water holding capacity of sandy soil?
organic matter chemical fertilizer mineral matter
Q.24 Organic matter is the major source of__________.
N & P P & S Both
Q.25 In which soils maximum volatilization of ammonia occurs?
Acidic neutral Alkali
Number of score out of 25 = Score in percentage =
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