Related Questions

Solvent deoiling process is used for separating oil and soft wax from hard wax. Methyl iso-butyl ketone and methyl ethyl ketone (MEK) are two commonly used deoiling solvents. Use of former as the deoiling solvent has the advantages of the
A Elimination of solvent drying facility
B Higher nitration temperature
C Lower solvent dilution ratio
D All of the above
Deoiling of wax is done by its
A Heating
B Cooling
C Solvent extraction
D Both B & C
After the increase of price of oil by 40%, a family decided to reduce its oil consumption so that the expenditure for oil goes up by 26% only. If the total consumption of oil before the price rise was 10 kg per month, then what is the current consumption of oil per month (in kg)?
A 8
B 8.50
C 9
D None of these
An upper limit of oil content is limited to about __________ percent for achieving efficient and satisfactory level of wax sweating.
A 5
B 15
C 40
D 60
The import of crude oil and petroleum done from national oil companies of producer countries, which have a net exportable surplus of oil is by
A term contracts
B term tenders
C monthly tenders
D All the above
Drum X is 1/2 full of oil and drum Y, which has twice the capacity of drum X, is 2/3 full of oil. If all of the oil in drum X is poured into drum Y, then drum Y will be filled to what fraction of its capacity?
A 3/4
B 5/6
C 11/12
D 7/6
Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its
A Poor oxidation stability and high gum forming tendency
B Greater tendency of decomposition at elevated temperature
C Hydrolysis tendency in presence of water
D All of the above
In a refinery petroleum crude is fractionated into gas fraction, light ends, intermediate distillates, heavy distillates, residues and by products. The group of products including gas oil, diesel oil and heavy fuel oil belongs to the fraction
A Heavy distillates
B Intermediate distillates
C Light ends
D Residues
Melting of wax is accompanied with __________ in entropy.
A Increase
B Decrease
C No change
D None of these
The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise.
A Increases
B Decreases
C Remains unchanged
D Decreases linearly

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