chemical engineering MCQs – Page 59

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 Review each marked answer and report any item that may be outdated or unclear.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
1161. Which of the following is an ore of iron ?
comments icon0

A. Bauxite

B. Chalcopyrite

C. Galena

D. Hematite
1162. Catalytic oxidation of toluene produces____________________?
comments icon0

A. Tri-nitro-toluene

B. Benzene

C. Styrene

D. Phenol
1163. Metallic soap is ________________ salt of fatty acids ?
comments icon0

A. Sodium

B. Potassium

C. Both sodium & potassium

D. Aluminium or calcium
1164. Flexible foam (for mattresses) is usually made of_____________________?
comments icon0

A. Silicone

B. Polyamides

C. PVC

D. Polyurethanes
1165. Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at _____________ C ?
comments icon0

A. < 0

B. 250-300

C. 90-100

D. 15-30
1166. 20% oleum means that in 100 kg oleum, there are 20 kg of_____________________?
comments icon0

A. None of these

B. H2SO4 and 80kg of SO3

C. SO3 for each 100 kg of H2SO4

D. SO3 and 80kg of H2SO4
1167. Molasses is the starting material for the production of ___________________ ?
comments icon0
A. Alcohol

B. Massecuite

C. Fatty acids

D. Essential oil

1168. Fourdrinier machine is used in the manufacture of ___________________?
comments icon0

A. Alcohol from molasses

B. Sugar

C. Phenol formaldehyde

D. Paper
1169. Thermoplastic materials_____________________?
comments icon0

A. Do not soften on application of heat

B. Are solvent insoluble

C. Are heavily branched molecules

D. None of these
1170. Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used_______________________?
comments icon0

A. As a rust preventive

B. As a lubricant

C. As a foam depressant in distillation column

D. In hard water for cleaning of cloth

1171. ____________________ is a thermosetting plastic ?
comments icon0

A. Polythene

B. P.V.C.

C. Polystyrene

D. Epoxy polymer
1172. Hydrocyanic acid (HCN) is used as an insecticide for____________________?
comments icon0

A. Controlling poultry lice

B. Potato beetle

C. Controlling timber degradation by ants

D. Citrus fruits
1173. In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst___________________?
comments icon0
A. All A , B. and C.

B. Handles lower SO2 content gas (7 -10% SO2), thus increasing the capital cost of the plant

C. Gives higher conversion efficiency

D. Has a longer life and is not poisoned by arsenic

1174. Fat dispersed in water is exemplified by__________________?
comments icon0

A. Emulsion

B. Butter

C. Gel

D. Colloids

1175. Molecular weights of polymers are in the range of__________________ ?
comments icon0
A. 102 107

B. 105 109

C. 102 102

D. 109 1011

1176. Which of the following is not an antibiotic ?
comments icon0

A. Tetracycline

B. Streptomycin

C. Penicillin

D. Quinine
1177. Which of the following is an yellow pigment ?
comments icon0

A. Zinc sulphides

B. Titanium dioxide

C. Lead chromates

D. Ferrous sulphate

1178. Nylon-6 is manufactured from ______________________ ?
comments icon0

A. Hexamethylene diamine and adipic acid

B. Caprolactam

C. Hexamethylene diamine and Sebacic acid

D. Hexamethylene diamine and Maleic anhydride

1179. Penicillin is separated from fermented broth by ____________________?
comments icon0
A. Extraction with amyl or butyl acetate

B. Evaporator in calandria

C. Extractive distillation

D. Ternary Azeotropic distillation

1180. Enzymes are_________________?
comments icon0

A. Derived from living organisms

B. All A, B. and C.

C. Proteins with high molecular weight (around 10,000)

D. Catalyst for temperature sensitive reactions