chemical engineering chemical process MCQs – Page 5

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 Review each marked answer and report any item that may be outdated or unclear.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
81. Acrylonitrile is mainly used in the _____________ industry?
comments icon0

A. Polymer

B. Dyeing

C. Photographic

D. Printing

82. Economics of Solvay Process depends upon the efficiency of __________________?
comments icon0

A. Ammonia recovery

B. Ammonia recovery and size of the plant

C. Ammoniation of salt solution

D. Carbonating tower

83. Molecular weights of polymers are in the range of__________________ ?
comments icon0

A. 102 102

B. 102 107

C. 105 109

D. 109 1011

84. Temperature during hydrogenation of oil should not be more than 200C, otherwise it will result in______________________?
comments icon0
A. All A, B. and C.

B. Pyrolysis of oil

C. Sintering of porous catalyst

D. Hydrogen embrittlement

85. Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of_____________________?
comments icon0
A. Sodium chloride

B. Sodium sulphate

C. Calcium sulphate

D. Magnesium chloride

86. Molecular weight of plastics ranges from ______________________?
comments icon0
A. 20000 to 250000

B. 5000 to 10000

C. 106 to 109

D. 500 to 5000

87. Pig iron is produced by blast furnaces in India using mostly the iron ore named _______________?
comments icon0
A. Hematite

B. Chalcopyrite

C. Siderite

D. Magnetite

88. Air used in aerobic fermentation must be sterilized, otherwise the ___________________?
comments icon0

A. Recovery of product will be difficult

B. None of these

C. Contamination of pure culture would result

D. Uniformity of product cannot be achieved

89. Lime and soda ash are added to water to remove ___________________?
comments icon0

A. Its corrosiveness

B. Bacteria

C. Undesirable taste and odour

D. Bicarbonates & sulphates of calcium and magnesium
90. ______________ is an ore concentrating metallurgical process involving a chemical change?
comments icon0

A. Froth floatation

B. Roasting

C. Electromagnetic separation

D. None of these

91. Sulphuric acid saturated with SO3 is called_________________?
comments icon0
A. Oleum

B. Sulphurous acid

C. Concentrated H2SO4

D. None of these

92. Bordeaux mixture is a/an________________?
comments icon0
A. Inorganic fungicide

B. Insecticide

C. Fertiliser

D. Explosive

93. Deacons method is used for the manufacture of____________________?
comments icon0

A. Common salt

B. Chlorine

C. Glaubers salt

D. Graphite electrode

94. Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda ?
comments icon0

A. None of these

B. Diaphragm electrolytic cell process

C. Lime-soda process

D. Mercury electrolytic cell process

95. Major component of flint glass is_____________________?
comments icon0
A. Lead oxide

B. Silica

C. Alumina

D. Soda

96. Hydrazine (N2H4) is used mainly as a/an__________________?
comments icon0

A. None of these

B. Explosive

C. Detergents additive

D. Rocket fuel
97. Gun powder, which is an explosive comprises of charcoal, sulphur and____________________?
comments icon0

A. Glycerine

B. Nitro glycerine

C. Dynamite

D. Salt petre
98. Solvay process is used for the manufacture of____________________?
comments icon0

A. Soda lime

B. Caustic soda

C. Soda ash

D. Caustic potash

99. Bleaching action of bleaching powder is due to its _____________ properties ?
comments icon0
A. Oxidising

B. Disinfecting

C. None of these

D. Reducing

100. Rancidity of the fatty oil can be reduced by its__________________?
comments icon0

A. Decoloration

B. Hydrogenation

C. Oxidation

D. Purification