Match the following :
`{:("Clumn I","Column II"),("(a) Oxidation of naphthalene","(p) Benzaldehyde"),("(b) Acylation of benzene","(q) Acetophenone"),("(c) Oxidation of toluene","(r) Benzoic acid"),("(d) Ozonolysis of styrene","(s) Phthalic acid"),(" ","(t) Formaldehyde"):}`