Potassium sulphate
Potassium chloride
A mixture of NaCl+ KCl
None of these
✅ The correct answer is option A.
Chemical Engineering MCQs
Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature
Rate of reaction is very low
Very high pressure is required resulting in costly pressure vessel
Space velocity of gas is very low resulting in decreased conversion
None of these
✅ The correct answer is option A.
5-10-5 fertilisers mean that they contain
5, 10, 5% respectively of N₂, P₂O₅ and K₂O
Only 5 to 10% active fertiliser constituents
5 to 10% filler & carrier of soil conditioners
None of these
✅ The correct answer is option A.
Heating a mixture of phosphate rock, coke and sand in an electric furnace produces
Phosphoric acid
Ammonium phosphate
Phosphorous
Superphosphate
✅ The correct answer is option C.
__________ is required more for leafy crops.
Nitrogen
Phosphorous
Potassium
Carbon
✅ The correct answer is option A.
Ammonium nitrate (a fertiliser) is coated with limestone powder to
Increase its nitrogen content
Cut down its production cost
Avoid the risk of explosion
Add extra nutrient as fertiliser
✅ The correct answer is option C.
Reaction of calcium fluorapatite with sulphuric acid produces
Ortho-phosphoric acid
Simple superphosphate
Triple superphosphate
Red phosphorous
✅ The correct answer is option B.
P₂O₅ content in triple superphosphate is about __________ percent.
42-50
15-20
85-90
70-75
✅ The correct answer is option A.
Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth?
Nitrogeneous fertiliser
Potassic fertiliser
Phosphatic fertiliser
None of these
✅ The correct answer is option A.
Rock phosphate used for the production of phosphatic fertiliser is mined at
Amjhor (Jharkhand)
Talchar (Orissa)
Bailladella (M.P.)
Kiriburu (Bihar)
✅ The correct answer is option A.