Petroleum Refinery Engineering

151. Octane number of gasoline produced by two stage fluidised catalytic cracking process is

1. 80
2. 87
3. 92
4. 97

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152. Octane number of n-heptane is assumed to be

1. 100
2. 0
3. 70
4. ∞

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153. Octane numbers of motor gasoline used in India and America are respectively

1. 87 & 94
2. 94 & 87
3. 94 & 100
4. 83 & 100

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154. Older crude petroleum

1. Is light and better
2. Gives more distillates
3. Gives less tar
4. All (A), (B) and (C)

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155. Olefins are

1. Saturated hydrocarbons
2. Unsaturated cyclic compounds (hydrocarbons)
3. Present in substantially good quantity in crude petroleum
4. None of these

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156. Operating condition in the electrical dehydrators for crude oil is about

1. 6.5 kgf/Cm² & 95°C
2. 1 atm. & 110 °C
3. 20 kgf/cm² & 110°C
4. 50 atm. and 150°C

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157. Operating temperature and pressure in catalytic reforming is about

1. 1-5 Kgf/cm² & 200°C
2. 15-45 Kgf/cm² & 450-550°C
3. 50 - 75 kgf/cm² & 600 - 800°C
4. 5-10 kgf/cm² & 150 - 250°C

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158. Paraffin base crude oil as compared to asphalt base crude gives

1. Higher yield of straight run gasoline
2. Higher octane number gasoline
3. Lower viscosity index lube oil
4. Poorer yield of lube oil

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159. Paraffins are desirable in lubricating oil, as it has got high

1. Viscosity
2. Viscosity index
3. Smoke point
4. Pour point

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160. Penetration test determines the _________ of the grease.

1. Stiffness
2. Lubricating properties (e.g. oilness)
3. Service temperature
4. Variation in viscosity with temperature

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