The average boiling point of aviation turbine fuel is closest to that of Diesel LPG Lubricating oils Kerosene TRUE ANSWER : ? YOUR ANSWER : ?
Extractor temperature is maintained at -20°C in Edeleanu process to reduce the __________ of kerosene. Aromatics Naphthenes Paraffins Smoke point TRUE ANSWER : ? YOUR ANSWER : ?
Concentration of H₂SO₄ catalyst in alkyla-tion is kept between 90-98%, because H₂SO₄ having concentration More than 98% promotes cracking Less than 90% promotes polymerisation Both A & B Neither A nor B TRUE ANSWER : ? YOUR ANSWER : ?
Gum formation in stored gasoline is mainly due to the Presence of sulphur Oxidation & polymerisation of unsaturates Alkylation of unsaturates Higher aromatic content TRUE ANSWER : ? YOUR ANSWER : ?
Good quality kerosene should have High smoke point Low paraffins content High aromatics content Low smoke point TRUE ANSWER : ? YOUR ANSWER : ?
Pick out the undesirable property for a solvent meant for dewaxing of lube oil. Complete miscibility with oil High solubility of wax in the solvent Both A & B Neither A nor B TRUE ANSWER : ? YOUR ANSWER : ?
Tetra-ethyl lead is added in gasoline to Reduce the pour point Increase its smoke point Reduce gum formation Increase its octane number TRUE ANSWER : ? YOUR ANSWER : ?
Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely mis-cible. It means that the aniline point of the diesel is __________ the room temperature. Less than More than Either more or less; depends on the room temperature Same as TRUE ANSWER : ? YOUR ANSWER : ?
Which is an anticing compound? Alcohals Pyridine Amyl nitrate Mercaptans TRUE ANSWER : ? YOUR ANSWER : ?
Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil Lower octane number of petrol Higher gum forming material in petrol Gives higher yield of petrol Higher sulphur content in the product TRUE ANSWER : ? YOUR ANSWER : ?