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

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
by

1 Answer

Answer :

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

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Last Answer : (A) Transparent soaps are made by cold process

Color of nitric acid is light yellow due to the presence of (A) NO (B) NO2 (C) N2H5 (D) NH3

Description : Color of nitric acid is light yellow due to the presence of (A) NO (B) NO2 (C) N2H5 (D) NH3

Last Answer : (B) NO2

__________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia. (A) Solvay (B) Ostwald's (C) Haber's (D) None of these

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Last Answer : (B) Ostwald's

An important water contaminant is: (a) Heavy metals (b) Nitrogen oxides (c) Carbon monoxide (d) NO2 and SO2

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This noncombustible liquid in its dry form is noncorrosive to common metals except aluminum. About 90% of all of this material which is manufactured goes into the production of chlorofluorocarbons. Is this substance: w) carbon tetrachloride x) methylene chloride y) hydrogen chloride z) methyl fluoride

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Nickel is not used as a catalyst in the (A) Fischer-Tropsch process (B) Shift conversion (C) Hydrogenation of oil (D) Ostwald's process of HNO3 manufacture

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Last Answer : (D) Ostwald's process of HNO3 manufacture

Commercial nitric acid is coloured because it contains dissolved – (1) Oxygen (2) Nitrous oxide (3) Nitrogen dioxide (4) Coloured impurities

Description : Commercial nitric acid is coloured because it contains dissolved – (1) Oxygen (2) Nitrous oxide (3) Nitrogen dioxide (4) Coloured impurities

Last Answer : (3) Nitrogen dioxide Explanation: Commercial nitric acid has a brown colour due to dissolved NO2. The procedure of bubbling dry air through warm commercial nitric acid, is to drive away the dissolved nitrogen dioxide so that the acid becomes colourless.

Commercial nitric acid is coloured because it contains dissolved : (1) Oxygen (2) Nitrous oxide (3) Nitrogen dioxide (4) Coloured impurities

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Last Answer : Nitrogen dioxide

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

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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

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One of the following is used to dissolve noble metals. That is (1) Nitric acid (2) Hydrochloric acid (3) Sulphuric acid (4) Aqua ragia

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Last Answer : (D) Oxides of nitrogen & V2O5 on a porous carrier

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

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Last Answer : (D) 98

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

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Select the wrong statement pertaining to flow of an incompressible fluid through a Venturimeter. (A) For frictionless flow, the fluid pressure entering the venturi meter will be exactly equal to that leaving the Venturimeter(B) Discharge of fluid through a Venturimeter depends upon the gagedifference irrespective of the orientation of Venturimeter(C) Venturimeter occupies less space than an orificemeter(D) Venturimeter incurs less power loss compared to an equivalentorificemeter

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Pick out the wrong statement. (A) Strongly caking coal should not be used in the Lurgi gasifier (B) Acetylene gas cannot be used for illumination purpose (C) Water gas is called blue gas because of the color of the flame, when it is burnt (D) Gaseous fuels require less percentage of excess air for combustion as compared to liquid fuels

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Pick out the wrong statement pertaining to leaching. (A) Fine solids cannot be leached in a Pachuca tank (B) Door classifier can be used for leaching of coarse solids (C) Vegetable seeds can be leached in either of Bollman extractor, Rotocel or Kennedy extractor (D) Very high temperature is not needed for the leaching of sugar beet

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Pick out the wrong statement pertaining to the cooling towers. (A) In case of induced draft cooling tower, the fan is placed at the top of the tower (B) Effectiveness of forced draft cooling tower is reduced by the recirculation of the humid and hot discharged air (C) A natural draft cooling tower is recommended to be used, when the air humidity is low and air temperature is also low (D) Effectiveness of a mechanical draft cooling tower is reduced with increase in air wet-bulb temperature

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Last Answer : (D) Effectiveness of a mechanical draft cooling tower is reduced with increase in air wet-bulb temperature

Pick out the wrong statement pertaining to the analogy between equations of heat and mass transfer operations. (A) Sherwood number in mass transfer is analogous to Nusselt number in heat transfer (B) Prandtl number in heat transfer is analogous to Schmidt number in mass transfer (C) Reynolds number in mass transfer is analogous to Grashoff number in heat transfer (D) Reynolds number remains the same in both heat and mass transfer

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Pick out the wrong statement pertaining to fluid flow. (A) The ratio of average velocity to the maximum velocity for turbulent flow of Newtonian fluid in circular pipes is 0.5 (B) The Newtonian fluid velocity in a circular pipe flow is maximum at the centre of the pipe (C) Navier-Stokes equation is applicable to the analysis of viscous flows

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Last Answer : (D) Decreases as the moisture content of flakes increases

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Last Answer : (D) Red color is imparted to glass by addition of arsenic oxide

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

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Last Answer : (D) None of these

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Nitric acid is made from air and water by the: w) Haber process x) Contact process y) Castner process z) Arc process

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Last Answer : ANSWER: Z -- ARC PROCESS 

Pick out the wrong statement. (A) Close circuit grinding is more economical than open circuit grinding (B) Cod oil, beef tallow or aluminium stearates are used as grinding aids in cement 'industries' (C) The equipment used for the removal of traces of solids from a liquid is called a classifier (D) Size enlargement is a mechanical operation exemplified by medicinal tablet making

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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

Which of the following is not required in the manufacture of soda ash by Solvay process? (A) Ammonia (B) Limestone (C) Nitric acid (D) None of these

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Last Answer : (C) Nitric acid

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Last Answer : (B) Sulphuric acid

Refining process of impure metals depends upon the differences in properties of the metal. Extraction of Al is usually carried out from its bauxite or

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Last Answer : Refining process of impure metals depends upon the differences in properties of the metal. ... . leaching C. liquation D. magnetic seperation

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Description : Refining process of impure metals depends upon the differences in properties of the metal. Extraction of Al is usually carried out from its bauxite or

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Last Answer : (B) The zeolite water softening process reduces the hardness of water by not more than 50%