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21.

Which of the following products contains maximum sulphur?

A.	LPG	B.	ATF
C.	LDO	D.	Furance oil

22.

In the atmospheric distillation of crude petroleum

A.	the content of sulphur increases from lighter fraction to heavier ones with the residue having the highest concentration of sulphur	B.	the content of sulphur deccreases from lighter fraction to heavier ones with the residue having the lowest concentration of sulphur
C.	the content of nitrogen decreases from lighter fraction to heavier ones with the residue having the lowest concentration of nitrogen	D.	none of the above

23.

Flash points below 50?C are determined by

A.	Pensky-Martens apparatus	B.	Abel apparatus
C.	Saybolt chromometer	D.	none of the above

24.

Flash points above 50?C are determined by

A.	Abel apparatus	B.	Saybolt chromometer
C.	Pensky-Martens apparatus	D.	Lovibond Tintometer

25.

Fire point of a given sample is

A.	equal to the flash point	B.	higher than the flash point
C.	less than the flash point	D.	equal to or less than the flash point

26.

The refractive index of naththas varies

A.	inversely with both wave length and temperature	B.	directly with both wave length and temperature
C.	inversely with wave length and directly with temperature	D.	directly with wave length and inversely with temperature

27.

Sulphur content in heavier products is determined generally by

A.	lamp method	B.	quartz tube method
C.	bomb method	D.	none of the above

28.

Which of the following petroleum products has minimum flash point?

A.	Gasoline	B.	Kerosine
C.	High speed diesel oil	D.	Fuel oil

29.

Which of the following petroleum products has maximum flash point?

A.	Naphtha	B.	Kerosine
C.	High speed diesel oil	D.	Furnace oil

30.

Which of the following petroleum products has minimum ?API?

A.	Gasoline	B.	Furnace oil
C.	Light diesel oil	D.	High speed diesel oil