A. Presence of unsaturated air
B. Fluctuation of ambient temperature during day and night
C. Both A. and B.
D. Neither A. nor B.
Advertisement
Related Mcqs:
- Gasoline extracted from natural gas (by compression and cooling) is called the ___________ gasoline?
- A. Polymer B. Unleaded C. Casing head D. Straight run...
- Gum formation in stored gasoline is mainly due to the ____________________?
- A. Alkylation of unsaturated B. Presence of sulphur C. Oxidation & polymerisation of unsaturated D. Higher aromatic content...
- Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners ?
- A. PCM B. Tar C. Light diesel oil D. Low viscosity furnace oil...
- Which of the following is desirable in diesel and kerosene but is undesirable in gasoline ?
- A. Aromatics B. Mercaptans C. Paraffins D. Naphthenic acid...
- Gasoline yield in catalytic reforming of naphtha may be about _________________ percent by weight?
- A. 85 B. 65 C. 50 D. 98...
- Phenols are added in gasoline to____________________?
- A. Improve the octane number B. Act as an antioxidant C. Reduce its viscosity D. Increase its pour point...
- Which of the following gasoline (unleaded) has the least octane number ?
- A. Catalytically cracked gasoline B. Straight run gasoline C. Catalytically reformed gasoline D. Polymer gasoline...
- Which of the following is desirable in petrol (gasoline) but undesirable in kerosene ?
- A. Paraffins B. Aromatics C. Mercaptans D. Naphthenic acid...
- Octane number of gasoline produced by two stage fluidised catalytic cracking process is___________________?
- A. 80 B. 87 C. 92 D. 97...
- Reid vapour pressure of gasoline is the measure of its_________________?
- A. Pour point B. Cloud point C. Vapour locking tendency D. Carbon residue...
Advertisement