Related Questions

Which of the following can be most effectively used for clarification of lube oil and printing ink?
A Sparkler filter
B Precoat filter
C Disc-bowl centrifuge
D Sharpies supercentrifuge
Pick out the undesirable property for a solvent meant for dewaxing of lube oil.
A Complete miscibility with oil
B High solubility of wax in the solvent
C Both A & B
D Neither A nor B
Pick out the additive property of a lube oil out of following.
A °API gravity
B Specific gravity
C Viscosity
D Flashpoint
Solvent used in duo-sol extraction for lube oil upgradation is a mixture of
A Propane & phenol-cresol mixture
B Methyl ethyl ketone & glycol
C Phenol & furfural
D Propane & liquid sulphur dioxide
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
Which of the following oil is more viscous?
A SAE 30
B SAE 40
C SAE 70
D SAE 80
A centrifugal pump designed to pump water is employed to pump a more viscous oil. In the later case, the pump
A Develops a lower head
B Capacity is reduced
C Requires more power
D All of 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
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
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

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