Correct Answer - X-U,Y-1,Z-5,W-2
`X=4`: a-Napthylamine is soluble in aqueous `HCl` solution.
`Y=1`, Benzoic acid is soluble in aqueous `NaHCO_(3)` solution.
`Z=`: Naphthalene insolyble in aqueous `HCl, NaoH` or `NaHCO_(3)` solution.
`W=2`: Salicylaldehyde has lower b.p. than `p-` hydroxy benzaldehyde