A. Anti-knocking
B. Anti-icing
C. Anti-gum forming
D. Dewaxing
Correct Answer: Anti-icing ✔
Last Updated: March 02, 2019
Related MCQs
- Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about__________?
- Antioxidants are added in petrol to __________?
- Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene ?
- Mercaptans is represented as (where R and R’ are alkyl groups) __________?
- Cetane number of alpha methyl naphthalene is assumed to be__________?
- Which of the following is desirable in diesel and kerosene but is undesirable in gasoline ?
- Flash point of diesel/kerosene (>50°C) is determined by the__________?
- Naphthenic acid is a/an __________ compound?
- LPG when brought to atmospheric pressure & temperature will be a__________?
- Gum formation in stored gasoline is mainly due to the __________?
- Smoke point of a good burning kerosene may be around __________ mm?
- Solvent deoiling process is used for separating oil and soft wax from hard wax. Methyl isobutyl ketone and methyl ethyl ketone (MEK) are two commonly used deoiling solvents. Use of former as the deoiling solvent has the advantages of the__________?
- Which of the following has the highest flash point of all ?
- Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C ?
- Which of the following is a Naphthene ?
- Which is almost absent in crude petroleum ?
- Hydrocracking employs __________?
- Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic__________?
- ‘Solvent naphtha’ used mostly as a solvent in paints and perfumery is produced by the __________ of virgin naphtha into small boiling range cuts?
- Refractive index of a petrofuel which is the ratio of velocity of light in air to its velocity in the petrofuel gives an indication if its__________?
- Octane number (unleaded) of gasoline produced by isomerisation of butane may be about __________?
- Molecular weight of crude petroleum may be around__________?
- The characterisation factor of crude petroleum oil is around__________?
- True vapour pressure of a petroleum fraction __________ Reid vapour pressure?
- A typical yield of diesel in straight run distillation of crude oil may be about __________ percent?
- Crude topping column operates at __________ pressure?
- Catalyst used in the catalytic polymerisation is__________?
- Gasoline extracted from natural gas (by compression and cooling) is called the __________ gasoline?
- __________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation?
- Clay treatment is used to remove __________ ?
- Which of the following is the easiest to crack ?
- Which parameter is used for the grading of paraffin waxes ?
- Higher vapour pressure of gasoline indicates __________?
- 1 centistoke is equal to __________ Redwood I seconds?
- Which of the following fractions of petroleum contains maximum sulphur ?
- Good quality kerosene should have__________?
- Catalyst used in alkylation process is__________?
- Cracking is__________?
- Concentration of H2SO4 catalyst in alkylation is kept between 90-98%, because H2SO4 having concentration?
- The conductivity of crude oil-water mixture depends on the__________?
- Octane number of n-heptane is assumed to be__________?
- Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners ?
- Catalyst used in isomerisation process is __________ ?
- Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it in a standard wick lamp at a standard rate for 24 hours. Char value of a good quality kerosene should be less than __________ mg/kg of kerosene?
- LPG stands for __________?
- Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about __________ ptb (pounds per thousand barrel) ?
- 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?
- Which of the following has the minimum °API gravity of all ?
- Reforming converts__________?
- Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of __________?
- The best method of determining sulphur in crude oil is by the __________ method?