Petroleum Refinery Engineering

271. Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners?

1. PCM
2. Tar
3. Light diesel oil
4. Low viscosity furnace oil

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272. Which of the following factors does not govern the mechanism of petroleum formation from organic sources?

1. pH of the soil
2. Bacterial action
3. Heat
4. Pressure

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273. Which of the following fractions of a crude oil will have the maximum gravity API (i.e. °API)?

1. Diesel
2. Gasoline
3. Atmospheric gas oil
4. Vacuum gas oil

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274. Which of the following fractions of petroleum contains maximum sulphur?

1. Diesel
2. Gasoline
3. Naphtha
4. Atmospheric residue

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275. Which of the following gasoline (unleaded) has the least octane number?

1. Catalytically cracked gasoline
2. Straight run gasoline
3. Catalytically reformed gasoline
4. Polymer gasoline

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276. Which of the following has maximum hydrogen/carbon ratio (by weight)?

1. Naphtha
2. Gasoline
3. Diesel
4. Fuel oil

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

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

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

1. Paraffins
2. Diolefins
3. Aromatics
4. Naphthenes

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

1. Aromatics
2. i-paraffins
3. Naphthenes
4. Olefins

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

1. Naphtha
2. Fuel oil
3. Light diesel oil
4. Petrol

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