A. Nitrogen
B. Phosphorous
C. Potassium
D. Calcium
Related Mcqs:
- 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 - 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 - NPK fertiliser is a _______________ fertiliser?
A. Complex
B. Mixed
C. Nitrogenous
D. Phosphatic - Fertiliser value of a nitrogenous fertiliser is expressed in terms of its ______________ content?
A. N2
B. KNO3
C. NO2
D. NHO3 - Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant ?
A. Urea
B. CAN
C. Ammonium sulphate
D. Superphosphate - Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth ?
A. Nitrogenous fertiliser
B. Potassic fertiliser
C. Phosphatic fertiliser
D. None of these - Which of the following does not come under the category of ‘secondary nutrient’ for plant growth ?
A. Calcium
B. Magnesium
C. Sulphur
D. Oxygen - Nitric acid is produced on commercial scale in a fertiliser plant by___________________?
A. Oxidation of ammonia
B. CaNO3 + H2SO4 reaction
C. Passing air through high voltage electric arc
D. None of these - Naphtha in a fertiliser plant is used as a source of___________________?
A. Fuel
B. H2
C. N2
D. O2 - pH value of soil is maintained at ______________ by the addition of fertiliser for optimum growth and health of the plant?
A. 4-5
B. 7-8
C. 9-10
D. 12-13
