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

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

1 Answer

Answer :

(B) Triple superphosphate
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

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

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

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

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

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

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 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

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

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

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

. 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

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)

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

H3PO4 is the chemical formula of __________ phosphoric acid. (A) Pyro (B) Ortho (C) Meta (D) None of these

Description : H3PO4 is the chemical formula of __________ phosphoric acid. (A) Pyro (B) Ortho (C) Meta (D) None of these

Last Answer : (B) Ortho

HPO3 is the chemical formula of __________ phosphoric acid. (A) Pyro (B) Ortho (C) Meta (D) None of these

Description : HPO3 is the chemical formula of __________ phosphoric acid. (A) Pyro (B) Ortho (C) Meta (D) None of these

Last Answer : (C) Meta

H4P2O7 is the chemical formula of __________ phosphoric acid. (A) Pyro (B) Ortho (C) Meta (D) None of these

Description : H4P2O7 is the chemical formula of __________ phosphoric acid. (A) Pyro (B) Ortho (C) Meta (D) None of these

Last Answer : (A) Pyro

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

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)

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

A phosphatic fertiliser contains 16% P2O5 . It could be (A) Dicalcium phosphate (B) Superphosphate(C) Triple superphosphate(D) None of these

Description : A phosphatic fertiliser contains 16% P2O5 . It could be (A) Dicalcium phosphate (B) Superphosphate (C) Triple superphosphate (D) None of these

Last Answer : (B) Superphosphate

(CH3 C6 H4 )3 PO4 is the chemical formula of (A) Triple superphosphate (B) Tricresyl phosphate (C) Fluorapatite (D) Superphosphate

Description : (CH3 C6 H4 )3 PO4 is the chemical formula of (A) Triple superphosphate (B) Tricresyl phosphate (C) Fluorapatite (D) Superphosphate

Last Answer : (B) Tricresyl phosphate

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

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

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

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

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

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)

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 of the following will undergo substitution in the ortho and para positions rather than in the meta position? (a) Nitrobenzene (b) Benzoic acid (c) Acetanilide (d) Benzaldehyde

Description : Which of the following will undergo substitution in the ortho and para positions rather than in the meta position? (a) Nitrobenzene (b) Benzoic acid (c) Acetanilide (d) Benzaldehyde

Last Answer : Acetanilide

Which of the following statements is false about toluene? (a) can be prepared by treating benzene with methyl chloride in the presence of AlCl3. (b) is converted to benzoic acid on refluxing with acidic KMnO4 solution. (c) on refluxing with concentrated H2SO4 gives a mixture of ortho and para toluenesulfonic acid. (d) can be nitrated with concentrated nitric acid to give a mixture of ortho and meta nitrotoluene.

Description : Which of the following statements is false about toluene? (a) can be prepared by treating benzene with methyl chloride in the presence of AlCl3. (b) is converted to benzoic acid on refluxing with ... (d) can be nitrated with concentrated nitric acid to give a mixture of ortho and meta nitrotoluene.

Last Answer : can be nitrated with concentrated nitric acid to give a mixture of ortho and meta nitrotoluene

Reaction of nitric acid and sulphuric acid with phosphate rock produces (A) Nitrophosphate (B) Diammonium phosphate (C) Tricresyl phosphate (D) Tributyl phosphate

Description : Reaction of nitric acid and sulphuric acid with phosphate rock produces (A) Nitrophosphate (B) Diammonium phosphate (C) Tricresyl phosphate (D) Tributyl phosphate

Last Answer : (A) Nitrophosphate

Chemical formula of meta-phosphoric acid is (A) H3PO4 (B) H4P2O7 (C) HPO3(D) Same as that of Pyrophosphoric acid

Description : Chemical formula of meta-phosphoric acid is (A) H3PO4 (B) H4P2O7 (C) HPO3 (D) Same as that of Pyrophosphoric acid

Last Answer : (C) HPO3

Ortho phosphoric acid is triprotic but phosphoric acid is diprotic. Why?

Description : Ortho phosphoric acid is triprotic but phosphoric acid is diprotic. Why?

Last Answer : Ans: Because of their structures ortho phosphoric acid and phosphoric acid have three and two ionisable hydrogen.

Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium(A) Carbonate(B) Phosphate(C) Bicarbonate(D) Silicate

Description : Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium (A) Carbonate (B) Phosphate (C) Bicarbonate (D) Silicate

Last Answer : (A) Carbonat

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

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.

Although — NH2 gp is an ortho and para directing gp, nitration of aniline gives along with ortho and para, meta derivatives also.

Description : Although — NH2 gp is an ortho and para directing gp, nitration of aniline gives along with ortho and para, meta derivatives also.

Last Answer : Nitration is carried out with a mixture of Conc. NO3 + Conc. H2 SO4 (nitrating mix). In the presence of these acids, most of aniline gets protonated to form anilinium ion. Therefore, in the ... is m-directing and deactivating hence a mixture of all three-ortho, para and meta derivatives is formed.

Phenol is an ortho-para director because the hydroxyl group : (a) donates electrons that increase electron density at ortho and para positions favoring nucleophilic attack. (b) donates electrons that increase electron density at ortho and para positions favoring electrophilic attack. (c) donates electrons to the ortho and para positions and attracts electrons away from meta positions favoring nucleophilic attack of the ring. (d) donates electrons to the ortho and para positions and attracts electrons away from meta positions favoring electrophilic attack on the ring.

Description : Phenol is an ortho-para director because the hydroxyl group : (a) donates electrons that increase electron density at ortho and para positions favoring nucleophilic attack. (b) donates ... para positions and attracts electrons away from meta positions favoring electrophilic attack on the ring.

Last Answer : donates electrons that increase electron density at ortho and para positions favoring electrophilic attack.

For reactions of ethylbenzene, the ethyl group is considered : (a) ortho director (b) ortho-para director (c) meta director (d) ortho-meta director

Description : For reactions of ethylbenzene, the ethyl group is considered : (a) ortho director (b) ortho-para director (c) meta director (d) ortho-meta director

Last Answer : ortho-para director

P2O5 content in triple superphosphate is about __________ percent. (A) 42-50 (B) 15-20 (C) 85-90 (D) 70-75

Description : P2O5 content in triple superphosphate is about __________ percent. (A) 42-50 (B) 15-20 (C) 85-90 (D) 70-75

Last Answer : (A) 42-50

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

Triple superphosphate is chemically represented as(A) CaF2.3Ca3(PO4)2(B) 3Ca3(PO4)2(C) Ca(PO3)2(D) Ca(H2PO4)2

Description : Triple superphosphate is chemically represented as (A) CaF2 .3Ca3 (PO4 )2 (B) 3Ca3 (PO4 )2 (C) Ca(PO3 )2 (D) Ca(H2PO4 )2

Last Answer : (A) CaF2 .3Ca3 (PO4 )2

Which of the following phosphatic fertilizer is useful in groundnut crop ? (A) D.A.P. (B) Rock Phosphate (C) Triple Super-Phosphate (TSP) (D) Single Super Phosphate (S.S.P.)

Description : Which of the following phosphatic fertilizer is useful in groundnut crop ? (A) D.A.P. (B) Rock Phosphate (C) Triple Super-Phosphate (TSP) (D) Single Super Phosphate (S.S.P.)

Last Answer : (D) Single Super Phosphate (S.S.P.)

Distinguish between single and triple superphosphate with respect to raw material and uses.

Description : Distinguish between single and triple superphosphate with respect to raw material and uses. 

Last Answer : Single and triple super phospahte w.r.t. raw material and uses