Draw the structure of the following derivatives :
(i) 2, 4-dinitrophenylhydrazone of C6H5CHO
(ii) Cyclopropanone oxime
(iii) Acetaldehydedimethylacetal
(iv) Semicarbazone to cyclobutanone
(v) Ethylene ketal of hexan-3-one
(vi) Methylhemiacetal of formaldehyde
