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

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

1 Answer

Answer :

(C) Phosphorous
by

Related questions

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

Electric furnace method for production of phosphorous uses phosphate rock and __________ (A) Phosphoric acid (B) Coke (C) Sulphuric acid (D) Silica and coke

Description : Electric furnace method for production of phosphorous uses phosphate rock and __________ (A) Phosphoric acid (B) Coke (C) Sulphuric acid (D) Silica and coke

Last Answer : (D) Silica and coke

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

A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous. (A) Salt & coke (B) Sand & coke (C) And coke (D) And sand

Description : A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous. (A) Salt & coke (B) Sand & coke (C) And coke (D) And sand

Last Answer : (B) Sand & coke

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

Description : 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 ... manufacture of ortho-phosphoric acid (D) Phosphate rock when reacted with dilute H2SO4 produces superphosphate

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

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

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

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

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

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

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

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

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

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

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

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)

Reaction of Cresylic acid with __________ produces Tricresyl phosphate.(A) Phosphorous pentoxide (B) Phosphorous oxychloride (C) Ammonium phosphate (D) Calcium phosphate

Description : Reaction of Cresylic acid with __________ produces Tricresyl phosphate.. (A) Phosphorous pentoxide (B) Phosphorous oxychloride (C) Ammonium phosphate (D) Calcium phosphate

Last Answer : (B) Phosphorous oxychloride

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

Description : 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

Last Answer : (D) 1400-1450

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

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

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) 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

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

Superphosphate is manufactured by reacting phosphate rock with (A) Acetic acid (B) Sulphuric acid (C) Aluminium chloride (D) None of these

Description : Superphosphate is manufactured by reacting phosphate rock with (A) Acetic acid (B) Sulphuric acid (C) Aluminium chloride (D) None of these

Last Answer : (B) Sulphuric acid

Which of the ‘complex fertilizer’? 1) Ammonium sulphate nitrate 2) Single superphosphate 3) Ammonium phosphate 4) Calcium ammonium nitrate

Description : Which of the ‘complex fertilizer’? 1) Ammonium sulphate nitrate 2) Single superphosphate 3) Ammonium phosphate 4) Calcium ammonium nitrate

Last Answer : 3) Ammonium phosphate

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)

Low grade phosphate rock can be used in electrical furnace, because (A) Of the better CaO/SiO2 balance for slag formation (B) CaO content is less (C) It is cheap (D) It produces low cost product

Description : Low grade phosphate rock can be used in electrical furnace, because (A) Of the better CaO/SiO2 balance for slag formation (B) CaO content is less (C) It is cheap (D) It produces low cost product

Last Answer : (A) Of the better CaO/SiO2 balance for slag formation

Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with(A) Acidic refractory(B) Rubber(C) Karbate(D) Lead or acid proof bricks

Description : Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with (A) Acidic refractory (B) Rubber (C) Karbate (D) Lead or acid proof bricks

Last Answer : (A) Acidic refractory

Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with (A) Acidic refractory (B) Rubber (C) Karbate (D) Lead or acid-proof bricks

Description : Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with (A) Acidic refractory (B) Rubber (C) Karbate (D) Lead or acid-proof bricks

Last Answer : (D) Lead or acid-proof bricks

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

Phosphoric acid is prepared from (A) Cryolite (B) Chalcopyrite (C) Rock phosphate (D) None of these

Description : Phosphoric acid is prepared from (A) Cryolite (B) Chalcopyrite (C) Rock phosphate (D) None of these

Last Answer : (C) Rock phosphate

A mixture of haematite, coke and limestone on heating in blast furnace gives molten iron metal. This is known as

Description : A mixture of haematite, coke and limestone on heating in blast furnace gives molten iron metal. This is known as

Last Answer : A mixture of haematite, coke and limestone on heating in blast furnace gives molten iron metal. ... Smelting B. Calcination C. Roasting D. Liquition

. Heating of ortho-phosphoric acid to about 900°C, produces (A) Meta-phosphoric acid (B) Pyrophosphoric acid (C) No change in it (D) None of these

Description : . Heating of ortho-phosphoric acid to about 900°C, produces (A) Meta-phosphoric acid (B) Pyrophosphoric acid (C) No change in it (D) None of these

Last Answer : (A) Meta-phosphoric acid

Heating of ortho-phosphoric acid to 250°C produces (A) Meta-phosphoric acid (B) Pyrophosphoric acid (C) No change in it (D) None of these

Description : Heating of ortho-phosphoric acid to 250°C produces (A) Meta-phosphoric acid (B) Pyrophosphoric acid (C) No change in it (D) None of these

Last Answer : (B) Pyrophosphoric acid

Which of the following fertilisers is produced in the by-products recovery (from coke oven gas) plant attached to an integrated steel plant? (A) Ammonium sulphate (B) Ammonium nitrate (C) Ammonium phosphate (D) None of these

Description : Which of the following fertilisers is produced in the by-products recovery (from coke oven gas) plant attached to an integrated steel plant? (A) Ammonium sulphate (B) Ammonium nitrate (C) Ammonium phosphate (D) None of these

Last Answer : (A) Ammonium sulphate

Which of the following statements is not valid for oxoacids of phosphorus? (1) All oxoacids contain atleast one P = O unit and one P – OH group (2) Orthophosphoric acid is used in the manufacture of triple superphosphate. (3) Hypophosphorous acid is a diprotic acid. (4) All oxoacids contain tetrahedral four coordinated phosphorous

Description : Which of the following statements is not valid for oxoacids of phosphorus? (1) All oxoacids contain atleast one P = O unit and one P – OH group (2) . (3) Hypophosphorous acid is a diprotic acid. (4) All oxoacids contain tetrahedral four coordinated phosphorous

Last Answer : Orthophosphoric acid is used in the manufacture of triple superphosphate.

The resistance furnace produces heat by the (A) Electric arc struck between electrodes and the charge (B) Flow of current through a heating element (C) Combination of induced current and skin effect (D) None of these

Description : The resistance furnace produces heat by the (A) Electric arc struck between electrodes and the charge (B) Flow of current through a heating element (C) Combination of induced current and skin effect (D) None of these

Last Answer : (B) Flow of current through a heating element

Yield of elemental phosphorous from rock phosphate is about __________ percent. (A) 1-2 (B) 15-25 (C) 40-45 (D) 60-65

Description : Yield of elemental phosphorous from rock phosphate is about __________ percent. (A) 1-2 (B) 15-25 (C) 40-45 (D) 60-65

Last Answer : (B) 15-25

________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant. (A) Calcium (B) Fluorine (C) Phosphorous (D) Sulphur

Description : ________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant. (A) Calcium (B) Fluorine (C) Phosphorous (D) Sulphur

Last Answer : (B) Fluorine

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

Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and (A) Sulphuric acid (B) Phosphoric acid (C) Hydrochloric acid (D) Hydrofluoric acid

Description : Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and (A) Sulphuric acid (B) Phosphoric acid (C) Hydrochloric acid (D) Hydrofluoric acid

Last Answer : (A) Sulphuric acid

The main charge in blast furnace is usually (A) Iron ore & coke (B) Iron ore, coke & air (C) Limestone, coke & iron ore (D) Limestone, sand & iron ore

Description : The main charge in blast furnace is usually (A) Iron ore & coke (B) Iron ore, coke & air (C) Limestone, coke & iron ore (D) Limestone, sand & iron ore

Last Answer : Limestone, coke & iron ore

Main constituent of phosphate rock is (A) Ammonium phosphate (B) Flour apatite (C) Calcium fluoride (D) Calcium phosphate

Description : Main constituent of phosphate rock is (A) Ammonium phosphate (B) Flour apatite (C) Calcium fluoride (D) Calcium phosphate

Last Answer : (B) Flour apatite

Rock phosphate constitutes mainly of (A) Fluorapatite (B) Di-calcium phosphate (C) Mono-calcium phosphate (D) Di-ammonium phosphate

Description : Rock phosphate constitutes mainly of (A) Fluorapatite (B) Di-calcium phosphate (C) Mono-calcium phosphate (D) Di-ammonium phosphate

Last Answer : (A) Fluorapatite

Which of the following fertilisers is used as a cattle feed?(A) Urea (B) Calcium ammonium nitrate (C) Superphosphate (D) Ammonium sulphate

Description : Which of the following fertilisers is used as a cattle feed? (A) Urea (B) Calcium ammonium nitrate (C) Superphosphate (D) Ammonium sulphate

Last Answer : (A) 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

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

__________ 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