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

Related Mcqs:

1. 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 ___________________?

   A. α-methyl naphthalene
   B. 2-2-4 tri methyl pentane
   C. 1, 3 butadiene
   D. Tetra methyl ethylene

2. Concentration of H2SO4 catalyst in alkylation is kept between 90-98%, because H2SO4 having concentration?

   A. Less than 90% promotes polymerisation
   B. More than 98% promotes cracking
   C. Both A. and B.
   D. Neither A. nor B.

3. Catalyst used in alkylation process is__________________?

   A. Sulphuric acid
   B. Nickel
   C. Silica gel
   D. Alumina

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

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

5. In catalytic cracking, the___________________?

   A. Gasoline obtained has a very low octane number
   B. Pressure & temperature is very high
   C. Gasoline obtained has very high aromatic content
   D. Gasoline obtained has very high amount of gum forming compounds

6. Catalyst used in the catalytic polymerisation is__________________?

   A. Phosphoric acid on kieselguhr
   B. Aluminium chloride
   C. Nickel
   D. Vanadium pentoxide

7. Which of the following is a non-regenerative fixed bed catalytic reforming process ?

   A. Hydroforming
   B. Thermofor catalytic reforming
   C. Platforming
   D. Hyperforming

8. The order of preference for feedstock to a catalytic reformer is _________________ ?

   A. Catalytic naphtha – coking naphtha – virgin naphtha
   B. Coking naphtha – virgin naphtha – catalytic naphtha
   C. Virgin naphtha – catalytic naphtha – coking naphtha
   D. Virgin naphtha – coking naphtha – catalytic naphtha

9. Pick out the correct statement about catalytic polymerisation ?

   A. H2SO4 polymerisation process gives gasoline rich in unsaturates
   B. In H2SO4 polymerisation, H3PO4 is always used with 2% steam to prevent meta & ortho
   H3PO4 formation, which are inactive
   C. Both A. and B.
   D. Neither A. nor B.

10. Operating temperature and pressure in catalytic reforming is about_____________?

    A. 1-5 Kgf/cm2 & 200°C
    B. 15-45 Kgf/cm2 & 450-550°C
    C. 50 – 75 kgf/cm2 & 600 – 800°C
    D. 5-10 kgf/cm2 & 150 – 250°C