Which of the following is true regarding preparation of aldehydes and ketones ?(i) Both can be prepared by the oxidation of the concerned alcohol with copper at about 250∘C(ii) Both can be prepared by the oxidation of the concerned alcohol by oppenauer oxidation.(iii) Both can be prepared by the oxidation of respective alcohol with acidic dichromate.

Which of the following is true regarding preparation of aldehydes and

1.	Which of the following is true regarding preparation of aldehydes and ketones ?(i) Both can be prepared by the oxidation of the concerned alcohol with copper at about 250∘C(ii) Both can be prepared by the oxidation of the concerned alcohol by oppenauer oxidation.(iii) Both can be prepared by the oxidation of respective alcohol with acidic dichromate.
Answer» Which of the following is true regarding preparation of aldehydes and ketones ? (i) Both can be prepared by the oxidation of the concerned alcohol with copper at about $250^{\circ} C$ (ii) Both can be prepared by the oxidation of the concerned alcohol by oppenauer oxidation. (iii) Both can be prepared by the oxidation of respective alcohol with acidic dichromate.