Related Questions

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
If the engine coolant leaks into the engine oil, then engine oil
A Appears milky
B Become foamy
C Turns black
D None of these
The engine oil viscosity is defined by ___________ ratings.
A Automatic transmission fluid (ATF)
B Society of automotive engineers (SAE)
C Gross vehicle weight (GVW)
D American petroleum institute (API)
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
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
The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________ at room temperature.
A Air
B Water
C Mercury
D Alcohol
The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is
A cineole
B engenol
C geraniol
D limonene
The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to
A lubricate the contacts
B insulate the contacts from switch body
C extinguish the arc
D all of the above
E none of the above

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