Choose the correct relative SN1 solvolysis reactivities (faster > slower) in ionising solvents.

Phenyl stabilises the cation better than methyl (1 true); two phenyl groups stabilise more than one (2 true); a para-methoxy group stabilises and a para-nitro group destabilises the benzyl cation (4 true). Secondary halides ionise faster than primary ones, so statement 3 is reversed and false.