Petroleum Refinery Engineering

141. Name the endothermic reaction out of the following:

1. Catalytic cracking
2. Hydrocracking
3. Dehydrogeneration of Naphthene to produce aromatic
4. Catalytic polymerisation

View answer

142. Name the hydrocarbon having the poorest oxidation stability.

1. Naphthene
2. Olefin
3. Paraffin
4. Aromatics

View answer

143. Naphtha yield in straight run distillation of crude oil may be about _________ percent.

1. 2
2. 6
3. 12
4. 18

View answer

144. Naphthenic acid is a/an _________ compound.

1. Sulphur
2. Nitrogen
3. Oxygen
4. None of these

View answer

145. Naphthenic acid is represented by

1. CnH_2n+2O₂
2. CnH_2n-2O₂
3. CnH₂n+2O2 (n ≥ 6)
4. CnH_2n+6O₂ (n ≤ 6)

View answer

146. Natural gas recovered along with crude oil from oil wells is called wet natural gas which has a higher _________ compared to the dry natural gas.

1. Unsaturated hydrocarbon content
2. Calorific value
3. Quantity of propane
4. Quantity of butane

View answer

147. Natural gasoline is produced

1. From oil wells
2. In oil refineries
3. By natural gas stripping
4. None of these

View answer

148. Octane number (unleaded) of gasoline produced by isomerisation of butane may be about

1. 45
2. 55
3. 70
4. 90

View answer

149. Octane number (unleaded) of reformed gasoline may be upto

1. 60
2. 70
3. 80
4. 90

View answer

150. Octane number of gasoline is a measure of its

1. Resistance to knock
2. Ignition delay
3. Ignition temperature
4. Smoke point

View answer