Description : Chemical formula of single superphosphate fertilizer is (a) Ca(H2PO4) (b) CaHPO4 (c) Ca3(PO4) (d) Ca(H2PO4) CaSO42H2O
Last Answer : (a) Ca(H2PO4)
Description : Chemical formula of single super phosphate is— a. Ca(H2Po4) b. CaHPo4 c. Ca3(Po4) d. None of these
Last Answer : a. Ca(H2Po4)
Description : Chemical formula of single super phosphate is a. Ca(H2Po4) b. CaHPo4 c. Ca3(Po4) d. None of these
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
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
Description : The main constituent of bones is (A) CaF2 (B) Ca3(PO4)2 (C) CaCO3 (D) CaCl2
Last Answer : (B) Ca3(PO4)2
Description : Tricresyl phosphate is chemically represented as (A) (CH3 C6 H4 )3 PO4 (B) Ca10 (PO4 )3F6 (C) (NH4 )2HPO4 (D) NH4H2PO4
Last Answer : (A) (CH3 C6 H4 )3 PO4
Description : Plants absorb phosphorus in the form of (A) H2PO4 (B) PO4 (C) SSP (D) P
Last Answer : (A) H2PO4
Description : Prussian blue is chemically represented by (A) FeO.TiO2 (B) Ca SO4 . 2H2O (C) Fe4 [Fe (CN6 )3 ] (D) AlF3 . 3NaF
Last Answer : (C) Fe4 [Fe (CN6 )3 ]
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
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
Description : Reaction of ortho-phosphoric acid with phosphate rock produces (A) Superphosphate (B) Triple superphosphate (C) Meta-phosphoric acid (D) Monoammonium phosphate
Description : Action of phosphoric acid on rock phosphate produces (A) Superphosphate (B) Triple superphosphate (C) Nitrophosphate (D) Diammonium phosphate
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
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
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
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
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
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
Description : Triple superphosphate is made by reacting phosphate rock with __________ acid. (A) Phosphoric (B) Nitric (C) Sulphuric (D) Hydrochloric
Last Answer : (A) Phosphoric
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
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
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.
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
Description : Toxicity of Mg can be modified by adding ________: a. N b. PO4 c. Ca d. K2O
Last Answer : Ca
Description : Why H3 PO3 is dibasic and H3PO4 is tribasic ?
Last Answer : Ans In H3PO3 only two replacable hydrogen but inH3PO4 , three hydrogens are replacable .
Description : 36. Aluminium is extracted from alumina (Al2O3 ) by electrolysis of a molten mixture of : (1) Al2O3 + KF + Na3AlF6 (2) Al2O3 + HF + NaAlF4 (3) Al2O3 + CaF2 + NaAlF4 (4) Al2O3 + Na3AlF6 + CaF2
Last Answer : Al2O3 + Na3AlF6 + CaF2
Description : Sodium tri poly phosphate (STPP) is chemically represented as (A) Na5P3O10 (B) Na4P3O8 (C) Na3P4O6 (D) Na2PO4
Last Answer : (A) Na5P3O10
Description : Washing soda is chemically represented by (A) Na2CO3 (B) Na2CO3 .H2O (C) Na2CO3 .10H2O (D) NaHC
Last Answer : (C) Na2CO3 .10H2O
Description : Glauber's salt is chemically represented by (A) Na2SO4 .10H2O (B) CaCl(OCl) (C) CaSO4 .H2O (D) (NH4 )2SO4
Last Answer : (A) Na2SO4 .10H2O
Description : Dense soda ash used in the manufacture of glass, is chemically represented by (A) Na2CO3 (B) Na2CO3 .10H2O (C) Na2CO3 .H2O (D) Na2HCO3
Last Answer : (C) Na2CO3 .H2O
Description : Pick out the wrong statement. (A) Hard glass which is used for making laboratory glass wares is a mixture of sodium borosilicate and aluminium borosilicate (B) Glass is decolorized during its manufacture by ... Na2O . CaO . 6SiO2 (D) Red color is imparted to glass by addition of arsenic oxide
Last Answer : (D) Red color is imparted to glass by addition of arsenic oxide
Description : Salt cake is chemically represented by (A) ) Na2SO4 (B) CaSO4 . ½H2O (C) MgSO4 (D) BaSO4
Last Answer : (A) Na2SO4
Description : What is the name of this ionic compound V(H2PO4)4?
Last Answer : This chemical formula is for vanadium dihydrogen phosphate.
Description : What is is the conjugate acid of H2PO4?
Last Answer : h2po3
Description : In a chemical reaction, represented by as shown in the bellow figure, it is observed that the (i) Rate of reaction increases by a factor of 4 on doubling the concentration of the reactant. (ii) Rate of reaction increases ... where, CA = concentration of the reactant) (A) CA (B) CA 2 (C) CA 3 (D) CA
Last Answer : (B) CA 2
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
Description : Multiple effect evaporators are commonly used in the manufacture of P. Paper Q. Superphosphate R. Sugar S. Fats (A) P and Q (B) P and R (C) P and S (D) R and S
Last Answer : (C) P and S
Description : Which is the best fertiliser for paddy? (A) Ammonium sulphate (B) Nitro-phosphate (C) Superphosphate (D) Potassium nitrate
Last Answer : (A) Ammonium sulphate
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
Description : Which of the following fertilisers is used as a cattle feed? (A) Urea (B) Calcium ammonium nitrate (C) Superphosphate (D) Ammonium sulphate
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
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
Description : P2O5 content in superphosphate is about __________ percent. (A) 30-35 (B) 15-20 (C) 65-70 (D) 85-90
Last Answer : (B) 15-20
Description : Which is the most suitable fertiliser for paddy? (A) CAN (B) Ammonium sulphate (C) Ammonium nitrate (D) Superphosphate
Last Answer : (B) Ammonium sulphate
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
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
Description : __________ is the most suitable fertiliser for paddy. (A) Urea (B) Ammonium sulphate (C) Superphosphate (D) Potassium nitrate
Description : Ca3 (Po4) 2 What kind of salt and what is its name ?
Last Answer : This is calcium phosphate. It is a calcium salt of phosphate group
Description : How many moles are in 124.60 grams of Fe3(PO4)2?
Last Answer : 124,60 grams of Fe3(PO4)2 are equal to 0,35 moles.