(a(i))[1]
State the name of the hydrocarbon found in the highest concentration in natural gas.
(a(ii))[1]
What is the role of a catalyst?
(b(i))[1]
State the name of the acid produced from sulfur.
(b(ii))[1]
Give one damaging effect of acid rain on buildings.
(b(iii))[1]
How does this equation show that sulfur dioxide has been oxidised?