Q.

How much percentile of sulphuric acid is treated with gasoline for the removal of its impurities?

A. 99 %
B. 60 %
C. 80 %
D. 40 %
Answer» C. 80 %
Explanation: the impure gasoline is treated with cold 80 % sulphuric acid. this does not react with paraffin, naphthenes and aromatic compounds. it reacts with unsaturated hydrocarbons to produce alcohols and ethers.
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