Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively (A) V2O5 & Cr2O3 . (B) Oxides of nitrogen & Cr2O3 (C) V2O5 on a porous carrier & oxides of nitrogen (D) Oxides of nitrogen & V2O5 on a porous carrier

Catalyst used in the manufacture of sulphuric acid by chamber &
contact processes are respectively
(A) V2O5 & Cr2O3
.
(B) Oxides of nitrogen & Cr2O3
(C) V2O5 on a porous carrier & oxides of nitrogen
(D) Oxides of nitrogen & V2O5 on a porous carrier
by

1 Answer

Answer :

(D) Oxides of nitrogen & V2O5 on a porous carrier
by

Related questions

Pick out the wrong statement. (A) Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80% (B) Contact process of sulphuric acid manufacture produces pure acid of concentration ≥ 98% (C) 75% oleum can be produced by distillation of 20% oleum (D) Contact process of sulphuric acid manufacture uses nickel as the catalyst

Description : Pick out the wrong statement. (A) Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80% (B) Contact process of sulphuric acid manufacture produces pure acid of ... of 20% oleum (D) Contact process of sulphuric acid manufacture uses nickel as the catalyst

Last Answer : (D) Contact process of sulphuric acid manufacture uses nickel as the catalyst

Contact process of sulphuric acid manufacture (A) Yields acid of higher concentration than chamber process (B) Yields acids of lower concentration than chamber process (C) Is obsolete (D) Eliminates absorber

Description : Contact process of sulphuric acid manufacture (A) Yields acid of higher concentration than chamber process (B) Yields acids of lower concentration than chamber process (C) Is obsolete (D) Eliminates absorber

Last Answer : (A) Yields acid of higher concentration than chamber process

. Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like (A) High cost (B) Fragile nature (C) Easy poiso(D) All (A), (B) and (C)ning tendency

Description : . Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like (A) High cost (B) Fragile nature (C) Easy poisoning tendency (D) All (A), (B) and (C)

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

The catalyst used in the manufacture of sulphuric acid by contact process is `:

Description : The catalyst used in the manufacture of sulphuric acid by contact process is `:

Last Answer : The catalyst used in the manufacture of sulphuric acid by contact process is `: A. `Al_(2)O_(3)` B. `Cr_(2)O_(3)` C. `V_(2)O_(5)` D. `Mn_(3)O_(4)`

Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is (A) Ni (B) V2O5 (C) Fe (D) Aluminium triethyl combined with titanium tetrachloride

Description : Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is (A) Ni (B) V2O5 (C) Fe (D) Aluminium triethyl combined with titanium tetrachloride

Last Answer : (D) Aluminium triethyl combined with titanium tetrachloride

Manufacture of phthalic anhydride uses __________ as a catalyst. (A) Ni (B) Cr (C) V2O5 (D) Al2O3

Description : Manufacture of phthalic anhydride uses __________ as a catalyst. (A) Ni (B) Cr (C) V2O5 (D) Al2O3

Last Answer : (C) V2O5

Sulphuric acid is used as a catalyst in the (A) Hydrogenation of oils (B) Gas phase oxidation of SO2 in chamber process (C) Alkylation of hydrocarbons(D) None of these

Description : Sulphuric acid is used as a catalyst in the (A) Hydrogenation of oils (B) Gas phase oxidation of SO2 in chamber process (C) Alkylation of hydrocarbons (D) None of these

Last Answer : (C) Alkylation of hydrocarbons

In chamber process of sulphuric acid manufacture in industry, the gas phase oxidation of SO2 to SO3 is accomplished by a __________ reaction. (A) Non-catalytic homogeneous (B) Non-catalytic heterogeneous (C) Catalytic homogenous (D) Catalytic heterogeneous

Description : In chamber process of sulphuric acid manufacture in industry, the gas phase oxidation of SO2 to SO3 is accomplished by a __________ reaction. (A) Non-catalytic homogeneous (B) Non-catalytic heterogeneous (C) Catalytic homogenous (D) Catalytic heterogeneous

Last Answer : (C) Catalytic homogenous

Which is a catalyst promoter used in catalytic ammonia synthesis reaction? (A) Al2O3 (B) Cr2O3 (C) K2O (D) MnO

Description : Which is a catalyst promoter used in catalytic ammonia synthesis reaction? (A) Al2O3 (B) Cr2O3 (C) K2O (D) MnO

Last Answer : (C) K2O

In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 ⇌ 2SO3 ), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO2 to SO3 can be increased by (A) Increasing the oxygen concentration (B) Putting more quantity of V2O5 catalyst in the converter (C) Removing some quantity of SO3 during intermediate stage (D) Maintaining low temperature & pressure in the converter

Description : In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 ⇌ 2SO3 ), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO2 to ... some quantity of SO3 during intermediate stage (D) Maintaining low temperature & pressure in the converter

Last Answer : (C) Removing some quantity of SO3 during intermediate stage

Pick out the wrong statement pertaining to nitric acid. (A) About 90% of nitric acid is manufactured by Ostwald's process (B) It is a strong mono basic acid which reacts with almost all the metals except noble metals (C) Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2 ) (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process

Description : Pick out the wrong statement pertaining to nitric acid. (A) About 90% of nitric acid is manufactured by Ostwald's process (B) It is a strong mono basic acid which reacts with almost all the ... (mainly NO2 ) (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process

Last Answer : (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process

In the Contact process of sulphuric acid manufacture, 98% acid cooler is made of (A) Stainless steel (B) Cast iron (C) Lead lined steel (D) Rubber lined steel

Description : In the Contact process of sulphuric acid manufacture, 98% acid cooler is made of (A) Stainless steel (B) Cast iron (C) Lead lined steel (D) Rubber lined steel

Last Answer : (B) Cast iron

Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of (A) Nitric acid (B) Sulphuric acid (C) Ammonium sulphate (D) Hydrochloric acid

Description : Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of (A) Nitric acid (B) Sulphuric acid (C) Ammonium sulphate (D) Hydrochloric acid

Last Answer : (B) Sulphuric acid

Promoter used in NH3 synthesis catalyst is (A) K2O (B) SiO3 (C) V2O5 (D) U2O3

Description : Promoter used in NH3 synthesis catalyst is (A) K2O (B) SiO3 (C) V2O5 (D) U2O3

Last Answer : (C) V2O5

__________ is used as a catalyst in fat splitting. (A) ZnO (B) Ni (C) V2O5 (D) FeO

Description : __________ is used as a catalyst in fat splitting. (A) ZnO (B) Ni (C) V2O5 (D) FeO

Last Answer : (A) ZnO

Catalyst used in the oxidation of benzene to produce Maleic anhydride is (A) V2O5 (B) Pt (C) Ni (D) Cr

Description : Catalyst used in the oxidation of benzene to produce Maleic anhydride is (A) V2O5 (B) Pt (C) Ni (D) Cr

Last Answer : (A) V2O5

During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH3 to NO is about __________ percent. (A) 38 (B) 68 (C) 82 (D) 98

Description : During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH3 to NO is about __________ percent. (A) 38 (B) 68 (C) 82 (D) 98

Last Answer : (D) 98

The contact process is involved in the manufacture of - (1) Nitric acid (2) Sulphuric acid (3) Ammonia (4) Caustic soda

Description : The contact process is involved in the manufacture of - (1) Nitric acid (2) Sulphuric acid (3) Ammonia (4) Caustic soda

Last Answer : (2) Sulphuric acid Explanation: It is also a central substance in the chemical industry. It is widely produced by contact process. Now days, sulphuric acid is prepared by contact process all over ... process is based upon the catalytic oxidation of sulfur dioxide (SO2) to sulfur trioxide (SO3).

Apply the Physico – Chemical principle in the manufacture of Sulphuric acid by contact process.

Description : Apply the Physico – Chemical principle in the manufacture of Sulphuric acid by contact process. 

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Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is (A) Alumina (B) Platinum (C) Vanadium pentoxide (D) Iron oxide

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Brunauer, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation? (A) Langmuir's assumption applies to every adsorbed layer (B) There is no dynamic equilibrium between successive layer (C) The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process (D) None of these

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Last Answer : (B) There is no dynamic equilibrium between successive layer

The catalyst used in hydrogenation of oils is - (1) Fe (2) V2O5 (3) Ni (4) O2

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Last Answer : (3) Ni Explanation: The catalyst used in hydrogenation of oils is nickel. It is used to speed up the reaction. Vegetable oils convert into vanaspati after hydrogenation.

Why does V2O5 acts as catalyst ?

Description : Why does V2O5 acts as catalyst ?

Last Answer : Ans : It is because V shows variable O.S . 

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

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

Which of the following factors control the deactivation of a porous catalyst pellet? (A) Decay reactions (B) Pore diffusion (C) Form of surface attack by poison (D) All (A), (B) and (C)

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

For a first order chemical reaction in a porous catalyst, the Thiele modulus is 10. The effectiveness factor is approximately equal to (A) 0 (B) 1 (C) 0.1 (D) 0.5

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Last Answer : (C) 0.1

A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by (A) Diffusion within the pellet (B) Reaction (C) External mass transfer (D) None of the above

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Last Answer : (A) Diffusion within the pellet

BET apparatus is used to determine the (A) Specific surface of a porous catalyst (B) Pore size distribution (C) Pore diameter (D) Porosity of the catalyst bed

Description : BET apparatus is used to determine the (A) Specific surface of a porous catalyst (B) Pore size distribution (C) Pore diameter (D) Porosity of the catalyst bed

Last Answer : (A) Specific surface of a porous catalyst

For a first order isothermal chemical reaction in a porous catalyst, the effectiveness factor is 0.3. The effectiveness factor will increase if the (A) Catalyst size is reduced or the catalyst diffusivity is reduced (B) Catalyst size is reduced or the catalyst diffusivity is increased (C) Catalyst size is increased or the catalyst diffusivity is reduced(D) Catalyst size is increased or the catalyst diffusivity is increased

Description : For a first order isothermal chemical reaction in a porous catalyst, the effectiveness factor is 0.3. The effectiveness factor will increase if the (A) Catalyst size is reduced or the ... the catalyst diffusivity is reduced (D) Catalyst size is increased or the catalyst diffusivity is increased

Last Answer : (B) Catalyst size is reduced or the catalyst diffusivity is increased

. B.E.T. method can be used to determine the __________ of a porous catalyst. (A) Solid density (B) Pore volume (C) Surface area (D) All (A), (B) and (C)

Description : . B.E.T. method can be used to determine the __________ of a porous catalyst. (A) Solid density (B) Pore volume (C) Surface area (D) All (A), (B) and (C)

Last Answer : (C) Surface area

Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in (A) Pyrolysis of oil(B) Sintering of porous catalyst(C) Hydrogen embrittlement(D) All (A), (B) and (C)

Description : Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in (A) Pyrolysis of oil (B) Sintering of porous catalyst (C) Hydrogen embrittlement (D) All (A), (B) and (C)

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

Catalyst used in alkylation process is (A) Sulphuric acid (B) Nickel (C) Silica gel (D) Alumina

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Last Answer : (A) Sulphuric acid

Mannheim furnace is used in the manufacture of (A) Hydrochloric acid (B) H2SO4 by Chamber process (C) Calcium carbide (D) Corundum

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Last Answer : (A) Hydrochloric acid

During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as (A) It is very corrosive at elevated temperature (B) Its viscosity is not reduced on further heating (hence pressure drop on pumping it, cannot be further reduced) (C) It decomposes on further increasing the temperature (D) None of these

Description : During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as (A) It is very corrosive at elevated temperature (B) Its viscosity is not reduced on ... be further reduced) (C) It decomposes on further increasing the temperature (D) None of these

Last Answer : (B) Its viscosity is not reduced on further heating (hence pressure drop on pumping it, cannot be further reduced)

Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the (A) Fertiliser manufacture (B) Car battery solution (C) Synthesis of oleum (D) Water treatment

Description : Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the (A) Fertiliser manufacture (B) Car battery solution (C) Synthesis of oleum (D) Water treatment

Last Answer : (B) Car battery solution

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

In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed: (A) Furnace → converter → absorber (B) Furnace → evaporator → absorber (C) Furnace → converter → evaporator (D) Converter → furnace → absorber

Description : In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed: (A) Furnace → converter → absorber (B) Furnace → evaporator → absorber (C) Furnace → converter → evaporator (D) Converter → furnace → absorber

Last Answer : (A) Furnace → converter → absorber

The catalyst used for the production of Sulphuric acid?

Description : The catalyst used for the production of Sulphuric acid?

Last Answer : Vanadium Pentoxide

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. (A) Stabilisation (B) Increasing the effectiveness (C) Improving the strength & heat resistance (D) All a, b & c

Description : 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 ... B) Increasing the effectiveness (C) Improving the strength & heat resistance (D) All a, b & c

Last Answer : (D) All a, b & c

Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be (A) Cooled (B) Humidified (C) Both (A) & (B) (D) Dehumidified

Description : Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be (A) Cooled (B) Humidified (C) Both (A) & (B) (D) Dehumidified

Last Answer : (B) Humidified

A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (ke ff) is given by (A) ke ff = k + kg (B) ke ff = (k+ kg )/2 (C) ke ff = (kkg ) 1/2 (D) 1/ke ff = 1/k + 1/kg

Description : A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (ke ff) is given by (A) ke ff = k + kg ( ... + kg )/2 (C) ke ff = (kkg ) 1/2 (D) 1/ke ff = 1/k + 1/kg

Last Answer : (D) 1/ke ff = 1/k + 1/kg

The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent. (A) 60 (B) 30 (C) 95 (D) 100

Description : The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent. (A) 60 (B) 30 (C) 95 (D) 100

Last Answer : (A) 60

Nitrogen oxides (NOx ) is not produced in the __________ industry. (A) Nitric acid making (B) Nitrogenous fertiliser (C) Detergent (D) Any of these

Description : Nitrogen oxides (NOx ) is not produced in the __________ industry. (A) Nitric acid making (B) Nitrogenous fertiliser (C) Detergent (D) Any of these

Last Answer : (C) Detergent

Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage? (A) Smog & ozone (B) Hydrogen fluoride & nitrogen oxides (C) Sulphur dioxide & spray of weed killers (D) Carbon monoxide

Description : Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage? (A) Smog & ozone (B) Hydrogen fluoride & nitrogen oxides (C) Sulphur dioxide & spray of weed killers (D) Carbon monoxide

Last Answer : (D) Carbon monoxide

Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog? (A) Nitrogen oxides (B) Hydrocarbons (C) Both 'a' & 'b' (D) Carbon monoxide

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Last Answer : (C) Both 'a' & 'b'

The main constituents of glass is (A) SiO2 (B) B2O3 (C) Al2O3 (D) Cr2O3

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Last Answer : (A) SiO2

Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the __________ process. (A) Mechanical (B) Sulphate/Kraft (C) Sulphite (D) Neutral sulphite semi-chemical

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Last Answer : (D) Neutral sulphite semi-chemical

Anthracene undergoes oxidation with O2/V2O5 at 500°C to give (a) Benzoic acid (b) Anthraquinone (c) Phthalic acid (d) Benzophenone

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Last Answer : Anthraquinone

What is the catalyst used in lead chamber process?

Description : What is the catalyst used in lead chamber process?

Last Answer : Need answer