Which one of the following alcohols cannot be oxidized by `K_(2)CrO_(4)` ?

Which of the following alcohol can not be oxidized by KMnO_4

Which of the following metal ion can give red precipitate with K_(2) CrO_(4)

Which of the following is amphoteric oxide ? Mn_(2)O_(7), CrO_(3), Cr_(2)O_(3), CrO, V_(2)O_(5), V_(2)O_(4)

Which of the following is amphoteric oxide ? Mn_(2)O_(7), CrO_(3), Cr_(2)O_(3), CrO, V_(2)O_(3), V_(2)O_(4)

Which of the following reagents cannot be used for the oxidation of 1^(@) alcohol aldehyde?