Question: Catalyst used in the isomerisation is_______________________?

• 1. Aluminium chloride
• 2. Alumina
• 3. Nickel
• 4. Phosphoric acid

Question: Crude oil is pumped by a _______________ pump?

• 1. Gear
• 2. Centrifugal
• 3. Screw
• 4. Reciprocating

Question: Maximum use of petroleum coke is in__________________?

• 1. Adsorption refining operation
• 2. Fuel gas manufacture
• 3. Carbon electrode manufacture
• 4. Iron ore reduction

Question: Waxy crudes are treated with chemical additives mainly to_________________________?

• 1. Depress its pour point
• 2. Dissolve wax
• 3. Precipitate wax
• 4. Remove wax

Question: Pick out the wrong statement?

• 1. Multigrade lubricating oils have high viscosity index
• 2. Paraffinic oil has very high viscosity index
• 3. Naphthenic oil has very low viscosity index
• 4. High viscosity index means a large change in viscosity with change in temperature

Question: Pick out the correct statement?

• 1. Paraffins have higher octane number than corresponding iso-paraffin
• 2. Paraffins have lower smoke point than aromatics
• 3. Suitability of kerosene as a fuel & as an illuminant may be determined by char value test
• 4. Aviation fuel should have very high cloud point

Question: Choose the correct statement?

• 1. Coking tendency increases with increasing molecular weight
• 2. Coking tendency decreases with increasing molecular weight
• 3. Higher pressure enhances coke formation
• 4. Coking is an exothermic reaction

Question: Choose the correct statement ?

• 1. Octane number of i-octane is zero
• 2. Octane number of paraffins increases with increasing number of carbon atoms
• 3. Branched chain paraffins have higher octane number than straight chain paraffins with same number of carbon atoms
• 4. The aromatics have lower octane number than naphthenes with same number of carbon atoms

Question: Pick out the wrong statement?

• 1. Aromatics have higher specific gravity than paraffins
• 2. Gross calorific value (GCV) of petrofuels is equal to (12400 – 2100 ρ2) where, ρ is the specific gravity of the fuel at 15.5°C
• 3. Heavier petrofuels have higher GCV on weight basis (i.e., Kcal/kg) but lower GCV on volume basis (i.e., Kcal/litre)
• 4. Higher specific gravity of petrofuels means higher C/H ratio

Question: Pick out the wrong statement ?

• 1. Pensky-Marten apparatus is used for determining flash points above 50°C
• 2. Characterisation factor of paraffinic crude oil is more than 12
• 3. Abel apparatus is used for determining flash points below 50°C
• 4. An oil having high susceptibility to change in viscosity with temperature changes, has a high viscosity index