chemical engineering chemical process MCQs – Page 3

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 Review each marked answer and report any item that may be outdated or unclear.

chemical engineering chemical process Mcqs
41. _________________ is produced using Polycondensation Reaction?
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A. Phenol formaldehyde

B. None of these

C. Polythene

D. Poly vinyl chloride

42. 20% oleum means that in 100 kg oleum, there are 20 kg of_____________________?
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A. SO3 for each 100 kg of H2SO4

B. SO3 and 80kg of H2SO4

C. None of these

D. H2SO4 and 80kg of SO3

43. Dechlorination of treated water is necessary to __________________?
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A. Reduce the bacterial load on filter

B. Control taste and odour

C. Remove chlorinous taste

D. Remove residual turbidity

44. Phenolic antiseptics are added in the __________________ soap?
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A. Medicated

B. Shaving

C. Transparent

D. Metallic

45. Viscose rayon is__________________?
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A. Regenerated cellulose nitrate

B. Regenerated cellulose acetate

C. Cellulose nitrate

D. None of these
46. Chemical formula of oleum is_________________?
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A. H2SO7

B. H2SO4

C. H2SO3

D. H2S2O7
47. Commercially ethylene is produced from naphtha by ______________________?
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A. Pyrolysis

B. Catalytic cracking

C. Hydrocracking

D. Catalytic dehydrogenation

48. Phenol formaldehyde____________________?
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A. Is an abrasive material

B. Is a monomer

C. Employs addition polymerisation

D. Employs condensation polymerisation
49. 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. Cl2, H2 & NaOH solution

B. O2 & H2

C. Cl2 & Na

D. Cl2 & H2

50. Production of one ton of cement requires about _______________ tons of limestone ?
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A. 1.2

B. 0.6

C. 3.8

D. 2.2

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

B. Low pressure & high temperature

C. High pressure & low temperature

D. Low pressure & low temperature

52. At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system) ?
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A. ?P

B. P

C. P2

D. 1/P

53. Contact process of sulphuric acid manufacture ____________________?
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A. Yields acids of lower concentration than chamber process

B. Is obsolete

C. Eliminates absorber

D. Yields acid of higher concentration than chamber process
54. Carbon disulphide is mainly used in the production of______________________?
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A. Paints

B. Viscose rayon

C. Corundum

D. Plasticiser for unsaturated polyester

55. Styrene (a monomer for the production of polystyrene) is commercially produced by ____________________?
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A. Fermentation of starch

B. Reacting ethylene oxide with acetaldehyde

C. Dehydration of ethyl alcohol followed by hydrogenation

D. Catalytic dehydrogenation of ethyl benzene
56. Widely used method for the conditioning of boiler feed water is the ___________________?
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A. Hot-lime soda process

B. Sequestration

C. Coagulation

D. Cold lime process

57. Maleic anhydride is produced by catalytic oxidation of____________________?
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A. Naphthalene

B. Benzene

C. Ethyl alcohol

D. Toluene

58. Blue colour is imparted to glass by the addition of__________________?
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A. CaO

B. FeSO4

C. NaOH

D. PbO

59. Sea water contains about ______________________ ppm of bromine ?
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A. 5

B. 1700

C. 500

D. 70
60. Shaving soaps are____________________?
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A. Metallic soaps compounded with frothing agents

B. Soft potassium soaps (potassium salt of fatty acid) with free Stearic acid to give lather a

C. High free alkali soaps having excess of cane sugar and alcohol

D. ting property</strong>

E. None of these