Which of the following has the highest gum forming tendency in gosoline ?

Related Mcqs:

1. Gum formation in stored gasoline is mainly due to the ____________________?

   A. Alkylation of unsaturated B. Presence of sulphur C. Oxidation & polymerisation of unsaturated D. Higher aromatic content...

2. Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency ?

   A. Paraffins B. Naphthenes C. Aromatics D. Iso-paraffins...

3. Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of ____________________?

   A. Thermal cracking B. Gum formation C. Coking D. Discoloration...

4. Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene ?

   A. Smoking tendency of hydrocarbons increases in the order: paraffins → isoparaffins → naphthenes → aromatics B. Smoking tendency of paraffins increases with decrease in its molecular weight C. Smoking tendency of naphthenes decreases with its increasing molecular weight & also on addition of double bond D. Smoking tendency of aromatics decreases with increase in...

5. With increase in the molecular weight of aromatic present in kerosene, its smoking tendency ?

   A. Increases B. Decreases C. Remain same D. Is unpredictable...

6. Which of the following has the highest flash point of all ?

   A. Diesel B. Kerosene C. Petrol D. Furnace oil...

7. 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...

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

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

9. Which of the following has the highest viscosity of all (at a given temperature) ?

   A. Naphtha B. Fuel oil C. Light diesel oil D. Petrol...

10. H/C ratio (by weight) for the same number of carbon atoms is the highest in case of____________________?

    A. Aromatics B. Paraffins C. Olefins D. Naphthenes...