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n-butane is a type of compound:
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Which is an efficient antiknock agent?
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An octane number of 100 is given to:
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Highest octane number is of:
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Cracking problem can be overcome by:
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A problem of combustion initiation before the spark plug fires is called:
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Catalyst used in catalytic cracking is:
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Lower unsaturated hydrocarbons are prepared preferably by:
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Better quality gasoline with high octane numbers are prepared from the method:
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Unsaturated hydrocarbon can be prepared by:
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Hexadecane splits up into compounds:
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Converting of petroleum fractions like kerosene oil and gas oil into gasoline is called:
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Fractional distillation of petroleum yields of gasoline:
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Pak Arab Refinery is located at:
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Attock Oil Refinery is located at:
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Capacity of Pakistan Oil Refinery and National Oil Refinery at Karachi is (in million tones)
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Attock Oil Refinery has capacity (in million tones):
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Petroleum obtained from rocks as blackish color is:
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Mineral oil is called:
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Natural gas mainly contains:
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A mixture of low boiling hydrocarbons is:
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About 80% of coal is used in:
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Total coal resources in Pakistan are estimated by the geological survey of Pakistan is (in billion tones):
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Fractional distillation of which separates many compounds?
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Heating of coal in the absence of air at $500-1000\circ^C$, converts it into:
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