Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N₂ & H₂ is high. The presence of promoter along with the catalyst helps in __________ of the catalyst.

Fertiliser Technology
Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N₂ & H₂ is high. The presence of promoter along with the catalyst helps in __________ of the catalyst.

Improving the strength & heat resistance

All of these

Increasing the effectiveness

Stabilisation

Improving the strength & heat resistance

All of these

Increasing the effectiveness

Stabilisation

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Fertiliser Technology
Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth?

Potassic fertiliser

None of these

Phosphatic fertiliser

Nitrogeneous fertiliser

Potassic fertiliser

None of these

Phosphatic fertiliser

Nitrogeneous fertiliser

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Fertiliser Technology
The composition of fresh feed to the high temperature, high pressure urea autoclave is

Compressed ammonia gas and excess compressed CO₂

Excess liquid ammonia and liquefied CO₂

Liquid ammonia and excess compressed CO₂

Excess liquid ammonia and compressed CO₂ gas

Compressed ammonia gas and excess compressed CO₂

Excess liquid ammonia and liquefied CO₂

Liquid ammonia and excess compressed CO₂

Excess liquid ammonia and compressed CO₂ gas

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Fertiliser Technology
__________ is the undesirable by-product produced in the manufacture of urea.

Ammonium carbamate

Ammonium carbonate

Carbon dioxide

Biuret

Ammonium carbamate

Ammonium carbonate

Carbon dioxide

Biuret

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Fertiliser Technology
Which of the following solvents is used for the extraction of H₃PO₄ from CaCl₂ solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching?

Toluene

Iso propyl alcohol

Butyl alcohol

Hexane

Toluene

Iso propyl alcohol

Butyl alcohol

Hexane

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Fertiliser Technology
Multistage operation (as in the case of catalytic oxidation of SO₂) is not carried out for NH₃ synthesis, because of

Higher pumping cost

High cost of the high pressure vessel used for the reactor

Comparatively higher pressure drop

Chances of entrainment and disturbance of catalyst bed

Higher pumping cost

High cost of the high pressure vessel used for the reactor

Comparatively higher pressure drop

Chances of entrainment and disturbance of catalyst bed

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Fertiliser Technology

Fertiliser Technology Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N₂ & H₂ is high. The presence of promoter along with the catalyst helps in __________ of the catalyst.

Fertiliser Technology Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth?

Fertiliser Technology The composition of fresh feed to the high temperature, high pressure urea autoclave is

Fertiliser Technology __________ is the undesirable by-product produced in the manufacture of urea.

Fertiliser Technology Which of the following solvents is used for the extraction of H₃PO₄ from CaCl₂ solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching?

Fertiliser Technology Multistage operation (as in the case of catalytic oxidation of SO₂) is not carried out for NH₃ synthesis, because of

Fertiliser Technology
Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N₂ & H₂ is high. The presence of promoter along with the catalyst helps in __________ of the catalyst.

Fertiliser Technology
Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth?

Fertiliser Technology
The composition of fresh feed to the high temperature, high pressure urea autoclave is

Fertiliser Technology
__________ is the undesirable by-product produced in the manufacture of urea.

Fertiliser Technology
Which of the following solvents is used for the extraction of H₃PO₄ from CaCl₂ solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching?

Fertiliser Technology
Multistage operation (as in the case of catalytic oxidation of SO₂) is not carried out for NH₃ synthesis, because of