309. Liquefied Petroleum Gas (LPG) is mainly a mixture of
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310. Octane number (unleaded) of gasoline produced by isomerisation of butane may be about
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311. Sour crude means the __________ bearing crude.
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312. In the atmospheric pressure crude distillation, the content of __________ from lighter fraction to heavier ones.
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313. Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha is
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314. Which one is preferred for aircraft engine?
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315. Gasoline yield in catalytic reforming of naphtha may be about __________ percent by weight.
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