chemical engineering petroleum refinery engineering MCQs – Page 8

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 Review each marked answer and report any item that may be outdated or unclear.

chemical engineering petroleum refinery engineering Mcqs
141. Illuminating characteristics of kerosene is expressed by its_____________?
comments icon0

A. Aniline point

B. Smoke point

C. Aromatic content

D. Luminosity number
142. Molecular weight of petrol may be about ____________________?
comments icon0

A. 40-60

B. 100-130

C. 350-400

D. 250-300

143. Flash point of diesel/kerosene (>50C) is determined by the_______________?
comments icon0

A. Saybolt chromometer

B. Abel apparatus

C. None of these

D. Pensky-Martens apparatus

144. Extractor temperature is maintained at -20C in Edeleanu process to reduce the ______________ of kerosene?
comments icon0

A. Naphthenes

B. Aromatics

C. Smoke point

D. Paraffins
145. In solutizer sweetening process, solutizer solution used is_______________?
comments icon0

A. Methanol in Unisol process

B. Naphthenic acid in Mercapsol process

C. Both A. and B.

D. Neither A. nor B.

146. The best method of determining sulphur in crude oil is by the _______________ method?
comments icon0
A. Bomb calorimeter

B. Junkers calorimeter

C. Kjeldahl

D. Dumas

147. The solvent used in Barisol dewaxing process is_____________________?
comments icon0

A. Hexane

B. Benzol and ethylene dichloride

C. Methyl ethyl ketone (MEK)

D. Furfural

148. Which of the following is used as a catalyst in fluidised bed catalytic cracking ?
comments icon0

A. Silica-magnesia

B. Bentonite clays

C. Silica-alumina

D. All A., B. and C.
149. Smoke point of kerosene is the_______________?
comments icon0

A. Maximum height of flame (in mm) without causing smoking, when burnt in a standard lamp

B. Temperature at which smoking starts

C. Time after which smoking starts on burning

D. None of these

150. Aniline point of high speed diesel may be about ____________ C ?
comments icon0
A. 70

B. 150

C. 105

D. 35

151. 1 centistoke is equal to ______________ Redwood I seconds?
comments icon0
A. 4.08

B. 40.8

C. 0.408

D. 1

152. Visbreaking process is used mainly for making_________________?
comments icon0
A. Fuel oil

B. High octane gasoline

C. Smoke free kerosene

D. High cetane diesel

153. Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners ?
comments icon0

A. Tar

B. Light diesel oil

C. Low viscosity furnace oil

D. PCM

154. Percentage of straight run gasoline in a typical crude oil may be around________________?
comments icon0

A. 18

B. 6

C. 38

D. 52
155. Tetraethyl lead is added to the petrol to increase its octane number, because its octane number is ________________?
comments icon0

A. Less than 25

B. Round about 100

C. Between 50 and 100

D. More than 100
156. Most widely used solvent for dewaxing is__________________?
comments icon0

A. Naphtha

B. Sodium plumbite

C. Methyl-ethyl-ketone (MEK)

D. Petroleum ether

157. Solvent naphtha used mostly as a solvent in paints and perfumery is produced by the _________________ of virgin naphtha into small boiling range cuts?
comments icon0

A. None of these

B. Distillation

C. Desulphurisation

D. Steam reforming

158. Visbreaking__________________?
comments icon0

A. Uses natural gas as feed

B. Is carried out at atmospheric pressure

C. Produces fuel oil of lower viscosity

D. Produces gasoline only

159. Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil__________________?
comments icon0
A. Gives higher yield of petrol

B. Lower octane number of petrol

C. Higher sulphur content in the product

D. Higher gum forming material in petrol

160. Mercaptans is represented as (where R and R are alkyl groups) _____________________?
comments icon0
A. R-S-H

B. R-S-R

C. R-S-R

D. R-COOH