The amount of tetraethyl lead added to improve the octane number of motor gasoline is around ______________ c.c per gallon of petrol?

A. 1
B. 5
C. 15
D. 25

A. pH value
B. Water percentage
C. Temperature
D. All A., B. and C.

A. 5
B. 25
C. 50
D. 100

A. Uses naphtha as feedstock
B. Does not much affect the molecular weight of the feed
C. Improves the quality & yield of gasoline
D. All A., B. and C.

A. CH4
B. C2H2
C. C2H4
D. C2H6

A. 30
B. 45
C. 75
D. 95