chemical engineering MCQs – Page 52

Practise multiple-choice questions from chemical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering Mcqs
1021. The basic constituent of vegetable oils is ___________________?
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A. Mono esters

B. Fatty alcohol

C. Triglyceride

D. Fatty acids

1022. Which of the following processes can remove both temporary as well as permanent hardness of water ?
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A. None of these

B. Boiling

C. Distillation

D. Filtration

1023. Solvay process as compared to dual process (i.e. modified Solvay process) ?
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A. Can use low grade brine

B. Has less corrosion problems

C. Involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl

D. Both B. and C.
1024. Catalyst used in the oxidation of benzene to produce Maleic anhydride is ______________________?
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A. V2O5

B. Ni

C. Cr

D. Pt

1025. Mannheim furnace is used in the manufacture of_________________?
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A. Hydrochloric acid

B. Corundum

C. H2SO4 by Chamber process

D. Calcium carbide

1026. Which is a high grade pulp ?
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A. Rag pulp

B. Mechanical pulp

C. Sulphate pulp

D. Sulphite pulp

1027. CO & H2 are the constituents of___________________?
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A. All A., B. and C.

B. Water gas

C. Coke oven gas

D. Producer gas

1028. Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of_____________________?
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A. Nitric acid

B. Hydrochloric acid

C. Formic acid

D. Methyl alcohol

1029. Nylon-66 is so named because the____________________?
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A. Polymer was first synthesised in 1966

B. Number of carbon atoms between two nitrogen atoms are 6

C. Average degree of polymerisation of the polymer is 1966

D. Number of nitrogen atoms between two carbon atoms are 6

1030. Favourable conditions for the liquefaction of gases in general are _____________________?
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A. Low pressure & high temperature

B. High pressure & low temperature

C. High pressure & high temperature

D. Low pressure & low temperature

1031. Multistage catalytic converter is not used in the___________________?
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A. Conversion of SO2 to SO3

B. NH3 synthesis reaction

C. Both A. and B.

D. Neither A. nor B.

1032. What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell ?
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A. O2 & H2

B. Cl2 & Na

C. Cl2 & H2

D. Cl2, H2 & NaOH solution
1033. Bio-degradable detergents ___________________?
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A. Have an isoparaffinic structure

B. Should not be used as it spoils the cloth

C. Pose problem in sewerage plant

D. Can be readily oxidised
1034. Sand and ______________ is fused at 1300C, to produce sodium silicate ?
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A. Coke

B. Sodium sulphate

C. Limestone

D. Soda ash
1035. Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because__________________?
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A. It reduces viscosity and imparts fluidity for its transportation through pipelines at economic

B. All A, B. and C.

C. ssure drop</strong>

D. Tar neutralises the residual acids present in pitch

E. Its calorific value is very less

1036. The main use of HCl is in the___________________?
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A. Treatment of spent fuel of nuclear reactor

B. None of these

C. Manufacture of cationic detergent

D. Drilling of petroleum wells and pickling of steel sheets
1037. Which of the following is an unsaturated fatty acid ?
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A. Palmitic acid

B. Stearic acid

C. Lauric acid

D. Oleic acid
1038. Sulphuric acid completely saturated with sulphur trioxide is called_________________?
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A. Sulphurous acid

B. Oleum

C. Dilute sulphuric acid

D. Concentrated sulphuric acid
1039. Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction ?
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A. Reduction of Na+ ions

B. Reduction of Cl- ions

C. Oxidation of Cl- ions

D. Oxidation of Na+ ions

1040. In an integrated steel plant, NH3 present in coke oven gas is normally recovered as_________________?
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A. NH4Cl

B. Liquid NH3

C. (NH4)2 NO3

D. (NH4)2SO4