Question: P2O5 percentage in the phosphoric acid produced by wet process is about
[A].10
30
50
70
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Fertiliser Technology
Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of
Question: Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of
[A].phosphoric acid.
superphosphate.
phosphorous.
triple superphosphate.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
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.
Question: 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
producer
natural
coal
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Conversion achieved in HNO3 synthesis with the use of platinum catalyst is about 95-97%. The rate of formation of nitrogen dioxide from the oxidation of nitric acid is favoured by
Question: Conversion achieved in HNO3 synthesis with the use of platinum catalyst is about 95-97%. The rate of formation of nitrogen dioxide from the oxidation of nitric acid is favoured by
[A].decreasing the pressure.
decreasing the temperature.
increasing the temperature.
none of these.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Bio-fertilisers are cheaper, renewable and pollution free. They improve the __________ of the soil.
Question: Bio-fertilisers are cheaper, renewable and pollution free. They improve the __________ of the soil.
[A].nutrient supply
texture
water holding capacity
all (a), (b) and (c)
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Liquid ammonia is not used as such a fertiliser in tropical countries like India, because
Question: Liquid ammonia is not used as such a fertiliser in tropical countries like India, because
[A].its N2 content is very low.
it is very costly.
it will evaporate on spraying.
it is not available.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the
Question: Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the
[A].presence of an inert atmosphere.
presence of a reducing atmosphere.
absence of air.
presence of an oxidising atmosphere.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Commercial fertilisers are available mostly in the form of
Question: Commercial fertilisers are available mostly in the form of
[A].powder
grannules
lumps
flakes
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous.
Question: A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous.
[A].salt & coke
sand & coke
and coke
and sand
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Main component of bone ash is
Question: Main component of bone ash is
[A].calcium sulphate
calcium phosphate
calcium carbonate
sodium phosphate
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.