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Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at ______________ °C?
Related MCQs
A phosphatic fertiliser contains 16% P2O5. It could be__________?
Reaction of ortho-phosphoric acid with phosphate rock produces __________?
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In calcium ammonium nitrate (CAN) fertiliser __________?
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Which of the following set of conditions is favourable for the maximum yield of ammonia by Haber’s process ?
Which of the following does not come under the category of ‘secondary nutrient’ for plant growth ?
Which of the following fertilizers is used as a cattle feed ?
Hydrogen content of coke oven gas is __________ percent?
Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth ?
Ammonium sulphate fertiliser is __________?
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Two gas based fertiliser plants are located in India are__________?
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__________ is not a fertiliser?
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Phosphatic fertilisers__________?
Reaction of nitric acid and sulphuric acid with phosphate rock produces__________?
Red phosphorous is changed into white phosphorous by__________?
NPK fertiliser is a __________ fertiliser?
Montecatini process is a widely used process for the manufacture of __________?
Which is a catalyst promoter used in catalytic ammonia synthesis reaction ?
Nitrogen content of calcium ammonium nitrate (CAN) is __________ percent?
__________ is required more for leafy crops?
Catalyst used in the manufacture of NH3 by Haber’s process is finely divided__________?
A fertiliser contains 82% N2. It could be__________?
The composition of fresh feed to the high temperature, high pressure urea autoclave is__________?
Dehydration of ammonium carbamate (to produce urea) is a/an __________ reaction?
Potassic fertiliser is graded based on its __________ content?
Fertiliser produced during soda ash manufacture by dual process is ammonium__________?
Electric process as compared to wet process (for the manufacture of phosphoric acid) ?
Rock phosphate constitutes mainly of__________?
Iron is not used alone as a catalyst in ammonia synthesis, because__________?
Phosphoric acid is produced in wet process from phosphate rock and__________?
The optimum size of the ammonia plant is __________ tons/day?
Out of the following, N2 content is minimum in__________?
Ammonium sulphate can be produced by reacting gypsum with__________?
Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because__________?
NPK means a __________ fertiliser?
Calcium ammonium nitrate (CAN) is__________?
Dehydration of ammonium carbamate produces__________?
P2O5 content in superphosphate is about __________ percent?
Promoter used in NH3 synthesis catalyst is__________?
Maximum stability of white phosphorous is at__________?
Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at ______________ °C?
A. 250-300
B. 500-750
C. 950-1050
D. 1400-1450
Correct Answer:
1400-1450
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Last Updated:
March 11, 2019