2967. Waxy crudes are treated with chemical additives mainly to
depress its pour point
dissolve wax
precipitate wax
remove wax
✅ The correct answer is option A.
2972. Which of the following has the highest octane number ?
Aromatics
i-paraffins
Naphthenes
Olefins
✅ The correct answer is option A.
2975. Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses __________ as catalyst.
bauxite
fuller’s earth
activated clay
all (a), (b) & (c)
✅ The correct answer is option D.
2978. Which is an anticing compound ?
Amyl nitrate
Alcohals
Mercaptans
Pyridine
✅ The correct answer is option B.
2983. __________ base crude oil is also called asphaltic crude.
Paraffinic
Naphthenic
Mixed
Aromatic
✅ The correct answer is option B.
2948. Which of the following is used as a solvent in deasphalting of petroleum products ?
Furfural
Propane
Methyl ethyl ketone
Liquid sulphur dioxide
✅ The correct answer is option B.
2952. Ethyl mercaptan is a/an __________ compound.
sulphur
nitrogen
oxygen
none of these
✅ The correct answer is option A.
2957. The condesate obtained on compression of wet natural gas is termed as
liquefied natural gasoline
natural gasoline
liquid natural gas
none of these
✅ The correct answer is option B.
2963. Catalyst used in isomerisation process is
H2SO4
H3PO4
HF
AlCl3
✅ The correct answer is option D.
2968. Furfural solvent extraction is used for upgrading (by dissolving aromatics)
naphtha
lubricating oils
wax
cracking feedstock
✅ The correct answer is option B.