⟩ Which is the most undesirable component in kerosene? A. Aromatics B. i-paraffins C. n-paraffins D. Naphthenes
Option A
Option A
Which of the following categories of gasoline has the highest lead susceptibility? A. Straight run gasoline B. Platinum reformed gasoline C. Catalytical cracked gasoline D. Polymer gasoline
Gum formation in stored gasoline is mainly due to the A. alkylation of unsaturates. B. presence of sulphur. C. oxidation & polymerisation of unsaturates. D. higher aromatic content.
Catalyst used in catalytic polymerisation which produces polymer gasoline is A. H2SO4 B. H3PO4 C. both (a) and (b) D. AlCl3
Antioxidants are added in petrol to 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.
Good quality kerosene should have A. low smoke point. B. high smoke point. C. high aromatics content. D. low paraffins content.
Which of the following reactions is undesirable in the production of catalytically reformed gasoline? A. Dehydrogenation of naphthene B. Dehydrogenation of lower paraffins C. Dehydrocyclisation of higher paraffins D. Isomerisation of paraffins
During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 to 8% water) __________ with increase in the amount of water. A. decreases B. increases C. remains unchanged D. decreases linearly
Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic A. cracking B. polymerisation C. reforming D. isomerisation
The most suitable solvent for deasphalting vacuum residue is A. propane B. methyl ethyl ketone C. doctor's solution D. methanol amine
Dearomatisation of kerosene (by liquid sulphur dioxide extraction) is done to A. increase its smoke point. B. improve its oxidation stability. C. decrease the breathing loss. D. none of these.