What is the product obtained from the dehydration of glycerol?

The major product of the reaction is:

Which of the following compounds gives a positive Baeyer's test but does not form a white precipitate with ammoniacal silver nitrate solution?

Which of the following is not a mixture of hydrocarbons?

The reagents $A$ and $B$ in the above reaction are:

$A$ sample of petrol is a mixture of $30\%$ $n$-heptane and $70\%$ iso-octane. The sample has an octane number of: