Paraffins are desirable in lubricating oil, as it has got high

__________ converts n-paraffins to i-paraffins.

A

Alkylation

B

Polymerisation

C

Isomerisation

D

None of these

A multigrade lubricating oil means an oil having high

A

Viscosity index

B

Viscosity

C

Aniline point

D

Flash point

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

Isomerisation converts the __________ tot-paraffins.

A

Paraffins

B

Olefins

C

Naphthenes

D

None of these

With increase in temperature, the thermal conductivity of fresh lubricating oil

A

Increases

B

Decreases

C

Remains unchanged

D

May increase or decrease; depends on its composition

Detergent is added as an additive in engine lubricating oil to

A

Reduce deposit formation

B

Keep contaminants in suspension

C

Increase oxidation stability

D

Prevent rusting

Higher vicosity index of a lubricating oil denotes

A

Less changes in fluidity of oil with temperature

B

Substantially high change in fluidity of oil with temperature

C

Its unsuitability under varying temperature conditions

D

None of these

Medium viscosity lubricating oil can be most ideally pumped by a __________ pump.

A

Vane

B

Piston

C

Centrifugal

D

Plunger

Moisture can be removed from lubricating oil using

A

Tubular centrifuge

B

Clarifier

C

Sparkler filter

D

Vacuum leaf filter

__________ is not an important refinery process for upgrading the quality of lubricating oil.

A

Deoiling

B

Solvent refinning

C

Clay treatment

D

Hydrotreatment

Paraffins are desirable in lubricating oil, as it has got high

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