A. Are useful during early stage of the plant growth
B. Accelerate fruit formation in later stages of growth
C. Lessen the effect of excessive nitrogen application
D. None of these
Related Mcqs:
- Phosphatic fertiliser is graded based on its _____________ content?
A. P2O3
B. PCl5
C. P2O5
D. H3PO4 - A phosphatic fertiliser contains 16% P2O5. It could be________________?
A. Dicalcium phosphate
B. Superphosphate
C. Triple superphosphate
D. None of these - The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is _____________ fertiliser?
A. Nitrogenous
B. Phosphatic
C. Potassic
D. None of these - Electric furnace method for production of phosphorous uses phosphate rock and _________________________?
A. Phosphoric acid
B. Coke
C. Sulphuric acid
D. Silica and coke - Low grade phosphate rock can be used in electrical furnace, because__________________?
A. Of the better CaO/SiO2 balance for slag formation
B. CaO content is less
C. It is cheap
D. It produces low cost product - A fertiliser plant is classified as a gas based fertiliser plant, when it uses ______________ gas as a source of hydrogen for the manufacture of ammonia?
A. Coke oven
B. Producer
C. Natural
D. Coal - Fertiliser produced during soda ash manufacture by dual process is ammonium______________________?
A. Chloride
B. Sulphate
C. Nitrate
D. None of these - Effectiveness of a fertiliser is independent of the ___________________?
A. Nature of soil
B. Type of crop
C. pH of soil
D. None of these - Reaction of phosphate rock with 98% H2SO4 produces ______________________?
A. Ortho-phosphoric acid
B. Superphosphate
C. White phosphorous
D. None of these - Nitrogen content in ammonium sulphate (a fertiliser) is around ______________ percent?
A. 5
B. 20
C. 50
D. 65
