Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents:
$(i)$ $PhMgBr$ and then $H_3O^{+}$
$(ii)$ Tollens' reagent
$(iii)$ Semicarbazide and weak acid
$(iv)$ Excess ethanol and acid
$(v)$ Zinc amalgam and dilute hydrochloric acid

(N/A) $(i)$ Cyclohexanecarbaldehyde reacts with $PhMgBr$ (a Grignard reagent) followed by acid hydrolysis to form cyclohexylphenylcarbinol.
$(ii)$ Cyclohexanecarbaldehyde reacts with Tollens' reagent $([Ag(NH_3)_2]^+)$ to form the cyclohexanecarboxylate ion and a silver mirror ($Ag$ precipitate).
$(iii)$ Cyclohexanecarbaldehyde reacts with semicarbazide in the presence of a weak acid to form cyclohexanecarbaldehyde semicarbazone.
$(iv)$ Cyclohexanecarbaldehyde reacts with excess ethanol in the presence of dry $HCl$ gas to form cyclohexanecarbaldehyde diethyl acetal.
$(v)$ Cyclohexanecarbaldehyde undergoes Clemmensen reduction with zinc amalgam $(Zn-Hg)$ and dilute hydrochloric acid $(HCl)$ to form methylcyclohexane.