chemical engineering chemical process MCQs – Page 8

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 Review each marked answer and report any item that may be outdated or unclear.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
141. Phenol is mainly used____________________?
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A. To produce phenol formaldehyde

B. To produce polyester resin

C. To produce benzene

D. As a plasticiser for unsaturated polyester

142. ______________ is an ore of lead?
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A. Siderite

B. Quartz

C. Galena

D. Chalcopyrite

143. Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of ____________________?
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A. Ammonium sulphate

B. Sulphuric acid

C. Hydrochloric acid

D. Nitric acid

144. Separation of fresh water from sea water can be done by the _______________ operation ?
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A. Osmosis

B. Absorption

C. Adsorption

D. Reverse osmosis
145. Rotary kiln is not involved in the production of___________________?
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A. Cement

B. None of these

C. Lime from limestone

D. Slaked lime from quick lime
146. Mercury cells for caustic soda manufacture, compared to diaphragm cells___________________?
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A. Require more power

B. Produce lower concentration NaOH

C. None of these

D. Require lower initial investment

147. Thermoplastic materials_____________________?
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A. None of these

B. Do not soften on application of heat

C. Are solvent insoluble

D. Are heavily branched molecules

148. Thermosetting plastic materials____________________?
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A. Can be repeatedly melted

B. Is useful for spinning

C. Cannot be melted after forming

D. Is useful for melt casting

149. Esterification reaction produces _________________?
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A. Vanaspati

B. Detergent

C. Soap

D. Mercaptans

150. Epoxy resin__________________?
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A. Is a polyester

B. Is a good adhesive

C. Is an elastomer

D. Cannot be used for surface coatings

151. Function of thinner in a paint is to ______________________ ?
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A. Prevent gelling of the paint

B. Form a protective film

C. Suspend pigments & dissolve film forming materials

D. Accelerate the oxidation of oil

152. Which of the following is an unsaturated fatty acid ?
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A. Stearic acid

B. Oleic acid

C. Lauric acid

D. Palmitic acid

153. Fermentator temperature during production of alcohol from molasses is around ______________ C?
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A. 5

B. 30

C. 300

D. 130

154. Temporary hardness of water can be removed by__________________?
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A. Addition of lime

B. Addition of alum (a coagulant)

C. Boiling

D. Filtration (through gravity sand filter)

155. Titanium dioxide is a/an ___________________ colour pigment?
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A. Yellow

B. White

C. Blue

D. Black

156. Refractory bricks having high thermal conductivity is desirable, when it is to be used in the _________________?
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A. Rotary kiln

B. L.D. converter

C. Blast furnace

D. Recuperator
157. ______________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant ?
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A. Pyrex

B. Lead

C. Soda lime

D. High silica

158. Prussian blue is chemically represented by__________________?
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A. Fe4 [Fe (CN6)3]

B. AlF3 . 3NaF

C. FeO.TiO2

D. Ca SO4 . 2H2O

159. Salt is the basic raw material for the manufacture of____________________?
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A. Cement

B. Glass

C. Potteries

D. Caustic soda
160. Salt cake is chemically represented by_________________?
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A. Na2SO4

B. MgSO4

C. BaSO4

D. CaSO4. H2O