Petroleum Refinery Engineering

21. Aniline point is the

1. Characteristic property of diesel & lubricating oils
2. Measure of aromatic content of oil
3. Both (A) and (B)
4. Neither (A) nor (B)

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22. Aniline point is the temperature at which

1. Equal weight of diesel & the aniline are completely miscible
2. Equal weight of aniline & the test sample are completely miscible
3. Equal volume of aniline & the test sample are completely miscible
4. Aniline vaporises

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23. Aniline point of high speed diesel may be about _________ °C.

1. 35
2. 70
3. 105
4. 150

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24. Aniline point of the diesel is a measure of its _________ content.

1. Aromatic
2. Paraffin
3. Olefin
4. Naphthene

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25. Aniline point test of an oil qualitatively indicates the _________ content of an oil.

1. Paraffin
2. Olefin
3. Aromatic
4. Naphthene

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26. Antioxidants are added in petrol to

1. Impart colour to it, for easy identification
2. Minimise the gum formation
3. Prevent icing of the carburettor
4. Prevent the lead build up in engines

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27. Aromatics are desired constituents of

1. Lubricating oil
2. Diesel
3. Kerosene
4. Petrol

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28. Aromatics have the highest _________ of all the hydrocarbons of same carbon atoms.

1. Smoke point
2. Octane number
3. Cetane number
4. Viscosity

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29. Asphalts are

1. Low molecular weight & low boiling point compounds present in petroleum
2. Desirable in catalytic cracking feedstock, because they produce coke
3. Readily oxidisable and form carbonaceous sludge
4. All (A), (B) & (C)

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30. Boiling range of motor gasoline is an indication of the

1. Case of starting
2. Rate of acceleration
3. Vapour locking tendency
4. All (A), (B) and (C)

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