(a(i))[1]
State which of A, B, C, D, E, F or G is a compound that contributes to acid rain.
(a(ii))[1]
State which of A, B, C, D, E, F or G is a product of respiration.
(a(iii))[1]
State which of A, B, C, D, E, F or G is a hydrocarbon that decolourises aqueous bromine.
(a(iv))[1]
State which of A, B, C, D, E, F or G is a carboxylic acid.
(a(v))[1]
State which of A, B, C, D, E, F or G is a compound that is the main constituent of natural gas.
(b(i))[2]
State the meaning of cracking.
(b(ii))[1]
Complete the chemical equation for the cracking of $\mathrm{C_{13}H_{28}}$ to make $\mathrm{C_8H_{18}}$ and one other hydrocarbon. $\mathrm{C_{13}H_{28} \rightarrow C_8H_{18} + \ldots\ldots\ldots\ldots}$