\(\mathrm{Z} \xrightarrow{\mathrm{PCl}_5} \mathrm{X} \xrightarrow{\text { alc. } \mathrm{KOH}} \mathrm{Y} \xrightarrow[2 \cdot \mathrm{H}_2 \mathrm{O} ; \text { boil }]{\text { 1.conc. } \mathrm{H}_2 \mathrm{SO}_4}\) Z
In the above reaction sequence Identify the Z
1
CH3–CH2–CH2–OH
2
3
(CH3–CH2)3C–OH
4
CH3–CH=CH2