Give names of the reagents to bring about the following transformations:
$(i)$ $\text{Hexan-}1\text{-ol}$ to $\text{hexanal}$
$(ii)$ $\text{Cyclohexanol}$ to $\text{cyclohexanone}$
$(iii)$ $p\text{-Fluorotoluene}$ to $p\text{-fluorobenzaldehyde}$
$(iv)$ $\text{Ethanenitrile}$ to $\text{ethanal}$
$(v)$ $\text{Allyl alcohol}$ to $\text{propenal}$
$(vi)$ $\text{But-}2\text{-ene}$ to $\text{ethanal}$

(N/A) $(i)$ $\text{Pyridinium chlorochromate } (PCC)$
$(ii)$ $\text{Jones reagent } (CrO_{3} / H_{2}SO_{4}) \text{ or } PCC$
$(iii)$ $\text{Chromyl chloride } (CrO_{2}Cl_{2}) \text{ followed by hydrolysis } (Etard \text{ reaction})$
$(iv)$ $\text{Diisobutylaluminium hydride } (DIBAL-H) \text{ followed by } H_{3}O^{+}$
$(v)$ $\text{Pyridinium chlorochromate } (PCC)$
$(vi)$ $\text{Ozonolysis } (1. O_{3}, 2. Zn / H_{2}O)$