Fertilizers Technology Mcqs
Q.1: Pick out the wrong statement?
A. Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence_
B. the plant roots penetrate with difficulty)
C. Large excess use of nitrogenous fertiliser in land causes the problem of diarrhoea and cyanosis_
D. Application of large excess of Potassic fertiliser in soil increases the valuable carotene in]
Q.2: Pick out the wrong statement?
A. Yellow phosphorous which is the most reactive allotropic form of phosphorous is transported[
B. under water
C. Apatite is the principal material present in phosphate rock which is chemically Ca10 (PO4)6 (F,_
D. Cl, OH)
Q.3: Pick out the wrong statement?
A. Dehydration of ammonium carbamate to produce urea is endothermic@
B. Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitableZ
C. Gypsum (CaSO4. 2H2O) is obtained as a by-product in the wet process for manufacture ofV
D. ortho-phosphoric acid
Q.4: Pick out the wrong statement ?
A. Nitrogen is normally supplied in fertiliser either in Ammoniacal or the nitrate form, fromZ
B. which the soil takes it up in the form of ammonium ions or nitrate ions and forms amino acids]
C. Calcium present in the fertiliser helps in correcting the soil acidityF
D. Particle size range of a good granular fertiliser is 10-15 mesh and it contains less moisture as`
Q.5: Pick out the wrong statement ?
A. Green acid is the other name of phosphoric acid produced by the reaction of phosphate rock`
B. & sulphuric acid
C. Chemically unreactive nature of red phosphorous is due to its polymeric structureQ
D. Red phosphorous is the most reactive allotropic form of phosphorousC
Q.6: Pick out the correct statement?
A. Reaction of NH3 with HNO3 to produce (NH4)2NO3 is endothermic=
B. With increase in NH3/CO2 ratio, urea yield decreases for a given temperature, pressure andZ
C. total feed rate
D. Biuret (an intermediate during urea manufacture) is toxic to seeds and animalsN
Q.7: Pick out the wrong statement?
A. All the nitrogenous fertilisers are not soluble in water8
B. A straight fertiliser contains only one nutrient0
C. Calcium cyanamide is used as weed killer in onion fields8
D. The phosphorous nutrient makes the plant stem stronger and increases its branchesQ
Q.8: Oxidation of ammonia is________________?(
A. Exothermic
B. Endothermic
C. Non-catalytic
D. Autocatalytic
Q.9: In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process___________________?
A. Uses lower grade phosphate rock
B. Requires lower capital investment in the plant.
C. Produces lower purity acid
D. Is very costly
Q.10: Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it___________________?
A. Has a pungent smell
B. Vaporises at normal temperature
C. Is toxic and highly corrosive
D. Is in short supply

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