Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octane is chemically known as ___________________?

Related Mcqs:

1. 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

2. Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene with __________________?

   A. Methyl alcohol
   B. Ethyl alcohol
   C. Methane
   D. Ethane

3. In catalytic alkylation, higher iso-butane to olefin ratio gives_________________?

   A. Low final boiling point product
   B. Higher yield
   C. Both A. and B.
   D. Neither A. nor B.

4. Octane number of n-heptane is assumed to be_________________?

   A. 100
   B. 0
   C. 70
   D. ∞

5. Octane number (unleaded) of gasoline produced by isomerisation of butane may be about __________________?

   A. 45
   B. 55
   C. 70
   D. 90

6. The octane number of aviation gasoline may be __________________?

   A. 79
   B. 87
   C. 97
   D. > 100

7. Which of the following gasoline (unleaded) has the least octane number ?

   A. Catalytically cracked gasoline
   B. Straight run gasoline
   C. Catalytically reformed gasoline
   D. Polymer gasoline

8. 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

9. Which of the following has the highest octane number ?

   A. Aromatics
   B. i-paraffins
   C. Naphthenes
   D. Olefins

10. Octane number of gasoline is a measure of its__________________?

    A. Resistance to knock
    B. Ignition delay
    C. Ignition temperature
    D. Smoke point