Liquefied Petroleum Gas (LPG) is mainly a mixture of _____________________? A. Propane & butane B. Methane & ethane C. High boiling olefins D. High boiling naphthenes

Which of the following has the lowest cetane number ? A. Aromatics B. i-paraffins C. Naphthene D. Olefins

Pressure & temperature maintained in catalytic cracking is about__________________? A. 2 atm & 500°C B. 10 atm & 500°C C. 30 atm & 200°C D. 50 atm & 750°C

In catalytic cracking, the___________________? A. Gasoline obtained has a very low octane number B. Pressure & temperature is very highC. Gasoline obtained has very high aromatic content D. Gasoline obtained has very high amount of gum forming compounds

Carbon percentage (by weight) in crude petroleum may be about_________________? A. 65 B. 75C. 85 D. 95

CnH2n is the general formula for_______________? A. Olefins B. NaphthenesC. Both A. and B. D. Neither A. nor B.

Which of the following has maximum hydrogen/carbon ratio (by weight) ? A. NaphthaB. Gasoline C. Diesel D. Fuel oil