A. Paraffins
B. Naphthenes
C. Aromatics
D. Iso-paraffins
Related Mcqs:
- Aromatics have the highest ________________ of all the hydrocarbons of same carbon atoms?
A. Smoke point
B. Octane number
C. Cetane number
D. Viscosity - Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene ?
A. Smoking tendency of hydrocarbons increases in the order: paraffins → isoparaffins →
naphthenes → aromatics
B. Smoking tendency of paraffins increases with decrease in its molecular weight
C. Smoking tendency of naphthenes decreases with its increasing molecular weight & also on
addition of double bond
D. Smoking tendency of aromatics decreases with increase in its molecular weight - With increase in the molecular weight of aromatic present in kerosene, its smoking tendency ?
A. Increases
B. Decreases
C. Remain same
D. Is unpredictable - H/C ratio (by weight) for the same number of carbon atoms is the highest in case of____________________?
A. Aromatics
B. Paraffins
C. Olefins
D. Naphthenes - Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene ?
A. Reforming
B. Pyrolysis
C. Alkylation
D. Hydrocracking - In petroleum refining, the process used for conversion of hydrocarbons to aromatics is________________?
A. Catalytic cracking
B. Catalytic reforming
C. Hydrotreating
D. Alkylation - Which of the following has the highest gum forming tendency in gosoline ?
A. Paraffins
B. Diolefins
C. Aromatics
D. Naphthenes - Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of ____________________?
A. Thermal cracking
B. Gum formation
C. Coking
D. Discoloration - Which of the following has maximum hydrogen/carbon ratio (by weight) ?
A. Naphtha
B. Gasoline
C. Diesel
D. Fuel oil - Carbon/hydrogen ratio (by weight) is maximum (out of following) for_________________?
A. Gasoline
B. Kerosene
C. Light gas oil
D. Heavy fuel oil
