Pick out the wrong statement. (A) Dehydration of ammonium carbamate to produce urea is endothermic (B) Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitable (C) Gypsum (CaSO4 . 2H2O) is obtained as a by-product in the wet process for manufacture of ortho-phosphoric acid (D) Phosphate rock when reacted with dilute H2SO4 produces superphosphate

Pick out the wrong statement.
(A) Dehydration of ammonium carbamate to produce urea is endothermic
(B) Direct use of liquid ammonia as a fertiliser for a tropical country like
India is suitable
(C) Gypsum (CaSO4
. 2H2O) is obtained as a by-product in the wet process
for manufacture of ortho-phosphoric acid
(D) Phosphate rock when reacted with dilute H2SO4 produces
superphosphate
by

1 Answer

Answer :

(B) Direct use of liquid ammonia as a fertiliser for a tropical country like
India is suitable
by

Related questions

Reaction of anhydrous liquid ammonia with ortho-phosphoric acid produces (A) Ammonium phosphate (B) Superphosphate (C) Triple superphosphate (D) None of these

Description : Reaction of anhydrous liquid ammonia with ortho-phosphoric acid produces (A) Ammonium phosphate (B) Superphosphate (C) Triple superphosphate (D) None of these

Last Answer : (A) Ammonium phosphate

In the manufacture of ortho-phosphoric acid by strong H2SO4 leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesirable (A) CaSO4 .½ H2O and CaSO4 crystals (B) Pyrophosphoric acid (C) Meta-phosphoric acid (D) All (A), (B) and (C)

Description : In the manufacture of ortho-phosphoric acid by strong H2SO4 leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesirable (A) CaSO4 .½ H2O and CaSO4 crystals (B) Pyrophosphoric acid (C) Meta-phosphoric acid (D) All (A), (B) and (C)

Last Answer : (A) CaSO4 .½ H2O and CaSO4 crystals

Reaction of phosphate rock with 98% H2SO4 produces (A) Ortho-phosphoric acid (B) Superphosphate (C) White phosphorous (D) None of these

Description : Reaction of phosphate rock with 98% H2SO4 produces (A) Ortho-phosphoric acid (B) Superphosphate (C) White phosphorous (D) None of these

Last Answer : (A) Ortho-phosphoric acid

Reaction of dilute sulphuric acid with phosphate rock produces (A) Phosphoric acid (B) Superphosphate (C) Triple superphosphate (D) Gypsum

Description : Reaction of dilute sulphuric acid with phosphate rock produces (A) Phosphoric acid (B) Superphosphate (C) Triple superphosphate (D) Gypsum

Last Answer : (A) Phosphoric acid

Electric process as compared to wet process (for the manufacture of phosphoric acid) (A) Can use only high grade phosphate rock (B) Is used less frequently (C) Produces a valuable by-product called gypsum (D) Is weak acid process

Description : Electric process as compared to wet process (for the manufacture of phosphoric acid) (A) Can use only high grade phosphate rock (B) Is used less frequently (C) Produces a valuable by-product called gypsum (D) Is weak acid process

Last Answer : (B) Is used less frequently

Dehydration of ammonium carbamate (to produce urea) is a/an __________ reaction. (A) Reversible (B) Catalytic(C) Exothermic(D) Endothermic

Description : Dehydration of ammonium carbamate (to produce urea) is a/an __________ reaction. (A) Reversible (B) Catalytic (C) Exothermic (D) Endothermic

Last Answer : (D) Endothermic

Reaction of ortho-phosphoric acid with phosphate rock produces (A) Superphosphate (B) Triple superphosphate (C) Meta-phosphoric acid (D) Monoammonium phosphate

Description : Reaction of ortho-phosphoric acid with phosphate rock produces (A) Superphosphate (B) Triple superphosphate (C) Meta-phosphoric acid (D) Monoammonium phosphate

Last Answer : (B) Triple superphosphate

Dehydration of ammonium carbamate produces (A) Urea (B) Biuret (C) Ammonia water (D) None of these

Description : Dehydration of ammonium carbamate produces (A) Urea (B) Biuret (C) Ammonia water (D) None of these

Last Answer : (A) Urea

Phosphoric acid is produced in wet process from phosphate rock and (A) Dilute H2SO4 (B) Concentrated H2SO4 (C) Concentrated NHO3 (D) Concentrated HCl

Description : Phosphoric acid is produced in wet process from phosphate rock and (A) Dilute H2SO4 (B) Concentrated H2SO4 (C) Concentrated NHO3 (D) Concentrated HCl

Last Answer : (A) Dilute H2SO4

Heating a mixture of phosphate rock, coke and sand in an electric furnace produces (A) Phosphoric acid (B) Ammonium phosphate (C) Phosphorous (D) Superphosphate

Description : Heating a mixture of phosphate rock, coke and sand in an electric furnace produces (A) Phosphoric acid (B) Ammonium phosphate (C) Phosphorous (D) Superphosphate

Last Answer : (C) Phosphorous

Dehydration of ammonium carbamate to yield urea is a/an __________ reaction. (A) Exothermic (B) Endothermic (C) Autocatalytic (D) Catalytic

Description : Dehydration of ammonium carbamate to yield urea is a/an __________ reaction. (A) Exothermic (B) Endothermic (C) Autocatalytic (D) Catalytic

Last Answer : (B) Endothermic

Triple superphosphate which contains about 46% P2O5 is produced by the reaction of phosphate rock with ortho phosphoric acid of________ percent concentration. (A) 25-28 (B) 52-54 (C) 75-80 (D) > 98

Description : Triple superphosphate which contains about 46% P2O5 is produced by the reaction of phosphate rock with ortho phosphoric acid of________ percent concentration. (A) 25-28 (B) 52-54 (C) 75-80 (D) > 98

Last Answer : (B) 52-54

In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process (A) Uses lower grade phosphate rock (B) Requires lower capital investment in the plant(C) Produces lower purity acid(D) Is very costly

Description : In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process (A) Uses lower grade phosphate rock (B) Requires lower capital investment in the plant (C) Produces lower purity acid (D) Is very costly

Last Answer : (C) Produces lower purity acid

Triple superphosphate is manufactured by reacting (A) Phosphate rock with phosphoric acid (B) Phosphate rock with sulphuric acid (C) Phosphate rock with nitric acid (D) Ammonium phosphate with phosphoric acid

Description : Triple superphosphate is manufactured by reacting (A) Phosphate rock with phosphoric acid (B) Phosphate rock with sulphuric acid (C) Phosphate rock with nitric acid (D) Ammonium phosphate with phosphoric acid

Last Answer : (A) Phosphate rock with phosphoric acid

__________ is the most suitable fertiliser for paddy. (A) Urea (B) Ammonium sulphate (C) Superphosphate (D) Potassium nitrate

Description : __________ is the most suitable fertiliser for paddy. (A) Urea (B) Ammonium sulphate (C) Superphosphate (D) Potassium nitrate

Last Answer : (B) Ammonium sulphate

Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of (A) Phosphoric acid (B) Superphosphate (C) Phosphorous (D) Triple superphosphate

Description : Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of (A) Phosphoric acid (B) Superphosphate (C) Phosphorous (D) Triple superphosphate

Last Answer : (C) Phosphorous

Action of phosphoric acid on rock phosphate produces (A) Superphosphate (B) Triple superphosphate (C) Nitrophosphate (D) Diammonium phosphate

Description : Action of phosphoric acid on rock phosphate produces (A) Superphosphate (B) Triple superphosphate (C) Nitrophosphate (D) Diammonium phosphate

Last Answer : (B) Triple superphosphate

Pick out the wrong statement. (A) 'Green acid' is the other name of phosphoric acid produced by the reaction of phosphate rock & sulphuric acid (B) Chemically unreactive nature of red phosphorous is due to its polymeric structure (C) Red phosphorous is the most reactive allotropic form of phosphorous (D) Red phosphorous, which is used in the manufacture of safety matches, is converted into white phosphorous by vaporisation followed by condensation

Description : Pick out the wrong statement. (A) 'Green acid' is the other name of phosphoric acid produced by the reaction of phosphate rock & sulphuric acid (B) Chemically unreactive nature of ... in the manufacture of safety matches, is converted into white phosphorous by vaporisation followed by condensation

Last Answer : (C) Red phosphorous is the most reactive allotropic form of phosphorous

ction of calcium Fluorapatite with sulphuric acid produces (A) Ortho-phosphoric acid (B) Simple superphosphate (C) Triple superphosphate (D) Red phosphorous

Description : ction of calcium Fluorapatite with sulphuric acid produces (A) Ortho-phosphoric acid (B) Simple superphosphate (C) Triple superphosphate (D) Red phosphorous

Last Answer : (B) Simple superphosphate

Pick out the wrong statement. (A) Yellow phosphorous which is the most reactive allotropic form of phosphorous is transported under water (B) Apatite is the principal material present in phosphate rock which is chemically Ca10 (PO4 )6 (F, Cl, OH) (C) Urea is more hygroscopic than ammonium nitrate (D) Nitrogen fixation means the process of bringing atmospheric nitrogen into combination i.e. into nitrogen compound fo

Description : Pick out the wrong statement. (A) Yellow phosphorous which is the most reactive allotropic form of phosphorous is transported under water (B) Apatite is the principal material present in ... fixation means the process of bringing atmospheric nitrogen into combination i.e. into nitrogen compound fo

Last Answer : (C) Urea is more hygroscopic than ammonium nitrate

__________ is the undesirable by-product produced in the manufacture of urea. (A) Ammonium carbonate (B) Biuret (C) Carbon dioxide (D) Ammonium carbamate

Description : __________ is the undesirable by-product produced in the manufacture of urea. (A) Ammonium carbonate (B) Biuret (C) Carbon dioxide (D) Ammonium carbamate

Last Answer : (B) Biuret

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? (A) Isopropyl alcohol (B) Butyl alcohol (C) Toluene (D) Hexane

Description : 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? (A) Isopropyl alcohol (B) Butyl alcohol (C) Toluene (D) Hexane

Last Answer : (B) Butyl alcohol

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

Description : 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

Last Answer : (C) Ammonium sulphate

Which is the best fertiliser for paddy? (A) Ammonium sulphate (B) Nitro-phosphate (C) Superphosphate (D) Potassium nitrate

Description : Which is the best fertiliser for paddy? (A) Ammonium sulphate (B) Nitro-phosphate (C) Superphosphate (D) Potassium nitrate

Last Answer : (A) Ammonium sulphate

Montecatini process is used for the manufacture of (A) Nitric acid (B) Phosphoric acid (C) Urea (D) Calcium ammonium nitrate (CAN)

Description : Montecatini process is used for the manufacture of (A) Nitric acid (B) Phosphoric acid (C) Urea (D) Calcium ammonium nitrate (CAN)

Last Answer : (C) Urea

Montecatini process is a widely used process for the manufacture of (A) Urea (B) Calcium ammonium nitrate (C) Triple superphosphate (D) None of these

Description : Montecatini process is a widely used process for the manufacture of (A) Urea (B) Calcium ammonium nitrate (C) Triple superphosphate (D) None of these

Last Answer : (A) Urea

In the manufacture of urea, the intermediate chemical formed is (A) Biuret (B) Ammonium carbamate (C) Ammonium carbonate (D) None of these

Description : In the manufacture of urea, the intermediate chemical formed is (A) Biuret (B) Ammonium carbamate (C) Ammonium carbonate (D) None of these

Last Answer : (B) Ammonium carbamat

Pick out the wrong statement. (A) Nitrogen is normally supplied in fertiliser either in Ammoniacal or the nitrate form, from which the soil takes it up in the form of ammonium ions ornitrate ions and forms amino acids(B) Calcium present in the fertiliser helps in correcting the soil acidity(C) Particle size range of a good granular fertiliser is 10-15 mesh and itcontains less moisture as compared to finely divided powder form of fertiliser(D) Ammonium nitrate fertiliser is obtained as a by-product in an integratedsteel plant having by-product coke ovens

Description : Pick out the wrong statement. (A) Nitrogen is normally supplied in fertiliser either in Ammoniacal or the nitrate form, from which the soil takes it up in the form of ammonium ions ornitrate ... nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens

Last Answer : (D) Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens

Triple superphosphate is made by reacting phosphate rock with __________ acid. (A) Phosphoric (B) Nitric (C) Sulphuric (D) Hydrochloric

Description : Triple superphosphate is made by reacting phosphate rock with __________ acid. (A) Phosphoric (B) Nitric (C) Sulphuric (D) Hydrochloric

Last Answer : (A) Phosphoric

Gypsum (CaSO4 .2H2O) is used for the reclamation of

Description : Gypsum (CaSO4 .2H2O) is used for the reclamation of

Last Answer : Ans. Sodic/Alkaline soils

Reaction of ortho-phosphoric acid with soda ash produces (A) Sodium Tributyl phosphate (STPP) (B) Tricresyl phosphate (C) Tributyl phosphate (D) Nitrophosphate

Description : Reaction of ortho-phosphoric acid with soda ash produces (A) Sodium Tributyl phosphate (STPP) (B) Tricresyl phosphate (C) Tributyl phosphate (D) Nitrophosphate

Last Answer : (A) Sodium Tributyl phosphate (STPP)

Which is the most suitable fertiliser for paddy? (A) CAN (B) Ammonium sulphate (C) Ammonium nitrate (D) Superphosphate

Description : Which is the most suitable fertiliser for paddy? (A) CAN (B) Ammonium sulphate (C) Ammonium nitrate (D) Superphosphate

Last Answer : (B) Ammonium sulphate

Pick out the wrong statement. (A) Indian coals on an average contain 25-30% ash as against 10-12% ash in imported coking coal (B) Ammonia is recovered in the form of ammonium sulphate in direct process of by-product recovery (C) A high swelling index number of coking coal indicates poor caking properties of coal (D) Wash oil is used for scrubbing Benzol from coke oven gas

Description : Pick out the wrong statement. (A) Indian coals on an average contain 25-30% ash as against 10-12% ash in imported coking coal (B) Ammonia is recovered in the form of ammonium sulphate in direct ... indicates poor caking properties of coal (D) Wash oil is used for scrubbing Benzol from coke oven gas

Last Answer : (C) A high swelling index number of coking coal indicates poor caking properties of coal

Pick out the correct statement. (A) Reaction of NH3 with HNO3 to produce (NH4 )2NO3 is endothermic (B) With increase in NH3 /CO2 ratio, urea yield decreases for a given temperature, pressure and total feed rate (C) Biuret (an intermediate during urea manufacture) is toxic to seeds and animals (D) Both (B) and (C)

Description : Pick out the correct statement. (A) Reaction of NH3 with HNO3 to produce (NH4 )2NO3 is endothermic (B) With increase in NH3 /CO2 ratio, urea yield decreases for a given temperature, pressure and total ... (an intermediate during urea manufacture) is toxic to seeds and animals (D) Both (B) and (C)

Last Answer : (B) With increase in NH3 /CO2 ratio, urea yield decreases for a given temperature, pressure and total feed rate

Urea (a nitrogenous fertiliser) is produced from carbon dioxide and (A) Nitric acid (B) Ammonia (C) Ammonium nitrate (D) Nitric oxide

Description : Urea (a nitrogenous fertiliser) is produced from carbon dioxide and (A) Nitric acid (B) Ammonia (C) Ammonium nitrate (D) Nitric oxide

Last Answer : (B) Ammonia

Pick out the wrong statement. (A) Dry process is used for the manufacture of cement, when the raw material is blast furnace slag (B) Portland cement is made employing wet process (C) Gypsum is added to Portland cement to lengthen its setting time (D) None of these

Description : Pick out the wrong statement. (A) Dry process is used for the manufacture of cement, when the raw material is blast furnace slag (B) Portland cement is made employing wet process (C) Gypsum is added to Portland cement to lengthen its setting time (D) None of these

Last Answer : (D) None of these

Brass container is suitable for storing (A) Aqueous ammonia (B) **** (C) H2SO4 (95%) (D) Phosphoric acid (95%)

Description : Brass container is suitable for storing (A) Aqueous ammonia (B) Beer (C) H2SO4 (95%) (D) Phosphoric acid (95%)

Last Answer : (B) Beer

Which of the following fertilisers contains the least percentage of nitrogen? (A) Liquid ammonia (B) Urea (C) Ammonium phosphate (D) Ammonium sulphate

Description : Which of the following fertilisers contains the least percentage of nitrogen? (A) Liquid ammonia (B) Urea (C) Ammonium phosphate (D) Ammonium sulphate

Last Answer : (C) Ammonium phosphate

Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an __________ reaction. (A) Catalytic (B) Exothermic (C) Endothermic (D) Reversible

Description : Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an __________ reaction. (A) Catalytic (B) Exothermic (C) Endothermic (D) Reversible

Last Answer : (B) Exothermic

Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an __________ reaction. (A) Catalytic (B) Endothermic (C) Exothermic (D) Autocatalytic

Description : Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an __________ reaction. (A) Catalytic (B) Endothermic (C) Exothermic (D) Autocatalytic

Last Answer : (C) Exothermic

Phosphate rock is a raw material for the manufacture of (A) Phosphoric acid (B) Phosphorous (C) Superphosphates (D) All (A), (B) and (C)

Description : Phosphate rock is a raw material for the manufacture of (A) Phosphoric acid (B) Phosphorous (C) Superphosphates (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

CaH4 (PO4 )2 is the chemical formula of (A) Superphosphate (B) Triple superphosphate (C) Calcium phosphate (D) Meta phosphoric acid

Description : CaH4 (PO4 )2 is the chemical formula of (A) Superphosphate (B) Triple superphosphate (C) Calcium phosphate (D) Meta phosphoric acid

Last Answer : (B) Triple superphosphate

Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it (A) Has a pungent smell (B) Vaporises at normal temperature (C) Is toxic and highly corrosive (D) Is in short supply

Description : Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it (A) Has a pungent smell (B) Vaporises at normal temperature (C) Is toxic and highly corrosive (D) Is in short supply

Last Answer : (B) Vaporises at normal temperature

Leaching of phosphate rock by strong __________ acid produces phosphoric acid. (A) Sulphuric (B) Hydrochloric (C) Either (A) or (B) (D) Neither (A) nor (B)

Description : Leaching of phosphate rock by strong __________ acid produces phosphoric acid. (A) Sulphuric (B) Hydrochloric (C) Either (A) or (B) (D) Neither (A) nor (B)

Last Answer : (C) Either (A) or (B)

Reaction of __________ acid with phosphate rock produces superphosphates. (A) Hydrochloric (B) Sulphuric (C) Nitric (D) Phosphoric

Description : Reaction of __________ acid with phosphate rock produces superphosphates. (A) Hydrochloric (B) Sulphuric (C) Nitric (D) Phosphoric

Last Answer : (B) Sulphuric

Pick out the wrong statement. (A) Catalytic hydrogenation of carbon monoxide produces methyl alcohol (B) In nylon-6, the number 6 represents the total number of carbon atoms in the ring (C) Raw materials for DDT manufacture are benzene and chlorine (D) Ethanolamines are produced by using ammonia and ethylene oxide as raw material

Description : Pick out the wrong statement. (A) Catalytic hydrogenation of carbon monoxide produces methyl alcohol (B) In nylon-6, the number 6 represents the total number of carbon atoms in the ring (C ... are benzene and chlorine (D) Ethanolamines are produced by using ammonia and ethylene oxide as raw material

Last Answer : (C) Raw materials for DDT manufacture are benzene and chlorine

During conversion of ammonium carbamate into urea, presence of large excess of water (A) Increases the yield of urea (B) Adversely affects the yield of urea (C) Reduces the evaporator load by diluting the urea solution (D) Does not affect the yield of urea

Description : During conversion of ammonium carbamate into urea, presence of large excess of water (A) Increases the yield of urea (B) Adversely affects the yield of urea (C) Reduces the evaporator load by diluting the urea solution (D) Does not affect the yield of urea

Last Answer : (B) Adversely affects the yield of urea

With increases in pressure, the conversion of Ammonium carbamate into urea (A) Increases (B) Decreases (C) Remains unaltered (D) Can either increase or decrease depends on biuret content

Description : With increases in pressure, the conversion of Ammonium carbamate into urea (A) Increases (B) Decreases (C) Remains unaltered (D) Can either increase or decrease depends on biuret content

Last Answer : (A) Increases

A fertiliser contains 82% N2 . It could be (A) Urea (B) Liquid NH3 (C) Ammonium nitrate (D) None of these

Description : A fertiliser contains 82% N2 . It could be (A) Urea (B) Liquid NH3 (C) Ammonium nitrate (D) None of these

Last Answer : (B) Liquid NH3

Pick out the correct statement about catalytic polymerisation. (A) H2SO4 polymerisation process gives gasoline rich in unsaturates (B) In H2SO4 polymerisation, H3PO4 is always used with 2% steam to prevent meta & ortho H3PO4 formation, which are inactive (C) Both (A) and (B) (D) Neither (A) nor (B

Description : Pick out the correct statement about catalytic polymerisation. (A) H2SO4 polymerisation process gives gasoline rich in unsaturates (B) In H2SO4 polymerisation, H3PO4 is always used with 2% steam to prevent meta & ortho H3PO4 formation, which are inactive (C) Both (A) and (B) (D) Neither (A) nor (B

Last Answer : (B) In H2SO4 polymerisation, H3PO4 is always used with 2% steam to prevent meta & ortho H3PO4 formation, which are inactive