1. | A fuel oil consists of 4 fractions A, B, C and D. Their molar compositions and vapour pressures are given below. The vapour pressure of the fuel oil will be __________ mm Hg.
![]() |
a. | 736 |
b. | 727.5 |
c. | 512 |
d. | 767.8 |
View Answer Report Discuss 50-50! |
Answer: (a).736
|
2. | Mercaptans are |
a. | low boiling sulphur compounds. |
b. | added in LPG cylinders to detect gas leakage by its smell. |
c. | undesirable in petrol, as they reduce its octane number. |
d. | all (a), (b) and (c) |
View Answer Report Discuss 50-50! |
Answer: (d).all (a), (b) and (c)
|
3. | Paraffin base crude oil as compared to asphalt base crude gives |
a. | higher yield of straight run gasoline. |
b. | higher octane number gasoline. |
c. | lower viscosity index lube oil. |
d. | poorer yield of lube oil. |
View Answer Report Discuss 50-50! |
Answer: (a).higher yield of straight run gasoline.
|
4. | True boiling point apparatus is used for the |
a. | determination of characterisation factor. |
b. | evaluation of oil stocks. |
c. | determination of true vapour pressure. |
d. | none of these. |
View Answer Report Discuss 50-50! |
Answer: (b).evaluation of oil stocks.
|
5. | In the atmospheric pressure crude distillation, the content of __________ from lighter fraction to heavier ones. |
a. | sulphur increases |
b. | sulphur decreases |
c. | nitrogen decreases |
d. | none of these |
View Answer Report Discuss 50-50! |
Answer: (a).sulphur increases
|