A. Impart colour to it, for easy identification
B. Minimise the gum formation
C. Prevent icing of the carburettor
D. Prevent the lead build up in engines
Related Mcqs:
- Glycol added to petrol acts as a/an ________________ agent ?
A. Anti-knocking
B. Anti-icing
C. Anti-gum forming
D. Dewaxing - Tetraethyl lead is added to the petrol to increase its octane number, because its octane number is ________________?
A. More than 100
B. Round about 100
C. Between 50 and 100
D. Less than 25 - The amount of tetraethyl lead added to improve the octane number of motor gasoline is around ______________ c.c per gallon of petrol?
A. 3
B. 300
C. 3000
D. 1000 - Mercaptans are added to liquefied petroleum gas (LPG) to _____________________ ?
A. Reduce its cost
B. Narrow down its explosion limit
C. Assist in checking its leakage from cylinder
D. Increase its calorific value - Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic____________________?
A. Cracking
B. Polymerisation
C. Reforming
D. Isomerisation - Molecular weight of petrol may be about ____________________?
A. 40-60
B. 100-130
C. 250-300
D. 350-400 - Which of the following is desirable in petrol (gasoline) but undesirable in kerosene ?
A. Paraffins
B. Aromatics
C. Mercaptans
D. Naphthenic acid - Stabilisation of gasoline (petrol) means ___________________?
A. Removal of dissolved gases from it
B. Increasing its oxidation stability
C. Improving its lead susceptibility
D. Increasing its vapour pressure - Straight run petrol as compared to methyl/ethyl alcohol has_________________?
A. Lower calorific value
B. Lower octane number
C. Higher specific gravity
D. Higher ignition temperature - Phenols are added in gasoline to____________________?
A. Improve the octane number
B. Act as an antioxidant
C. Reduce its viscosity
D. Increase its pour point
