An orgnic compound (A) contains `79.25%` C, `5.66%` H, and `15.09%` O. It has a vapour density of 53 and reduces the Tollens reagent. Action of NaOH on (A) produces (B) and (C ). (B) on controlled oxidation gives (A) which on further oxidation produces (C ). (C ) on distillation with `PCl_(5)` gives (D). (D) reacts with aq. `NH_(3)` giving (E ) which reacts with `NaOH` and `Br_(2)` forming (F). The latter on reaction which hypo-phoshorus acid yield (H). Identify the compounds (A) to (H).

An organic compound (A) containing 60.12% (C ) and 13.3% H has vapour density of 30. On oxidation it gives (B) (C_(3)H_(6)O) which on further oxidation by NaOH and I_(2) gives compound (C ) (C_(2)H_(3)O_(2)Na) . When (B) is treated with hydroxylamine, a compound (D) (C_(3)H_(7)NO) is formed. what are (A), (B), (C ) and (D) ?

An organic compound (A) containing 60.12% (C ) and 13.3% H has vapour density of 30. On oxidation it gives (B) (C_(3)H_(6)O) which on further oxidation by NaOH and I_(2) gives compound (C ) (C_(2)H_(3)O_(2)Na) . When (B) is treated with hydroxylamine, a compound (D) (C_(3)H_(7)NO) is formed. what are (A), (B), (C ) and (D) ?

An organic compound (A) contains 87.27% C and 13.73% H. Its vapour density is 55. Ozonolysis of (A) gives three compounds (B), (C ), and (D). (B) undergoes a positive iodoform reaction and reacts with phenylhdrazine. Compounds (C ) and (D) are not positive to Iodoform test. (C ) on controlled oxidation gives (E ) (C_(4)H_(6)O_(4)) , which reacts with two equivalents of NaOH for complete neutralisation. (E) on heating above its melting point yields (F) (C_(4)H_(4)O_(3)) along with H_(2)O . Compound D reacts with NaOH solution to form (G) and (H). Acidified solution of (G) yields with a voltile acid (I) which reduces ammonical AgNO_(3) solution. (I) undergoes reduction with LiAlH_(4) to produce (H). Assign structures for the lettered compounds (A) to (I).

An organic compound (A) has 76.6% C and 6.38% H. Its vapour density is 47. It gives characteristic colour with FeCl_(3) solution. (A) when treated with CO_(2) and NaOH at 140^(@)C under pressure gives (B) which on acidification gives (C ). (C ) reacts with acetyl chloride to give (D) which is a well known pain killer. Identify (A), (B), (C ), (D) and explain the reactions involved.

(i) An organic compound A with molecular formula C_(7)H_(8) on oxidation by chromyl chloride in the presence of C Cl_(4) gives a compound B which gives positive Tollen's test. The compound B on treatment with NaOH followed by acid hydrolysis gives two product C and D. C on oxidation gives B which on further oxidation gives D. the compound D on distillation with sodalime gives a hydrocarbon E. Below 60^(@)C , concentrated nitric acid reacts with E in the presence of concentrated sulphuric acid forming a compound F. identify the compounds A,B,C,D,E and F. (ii) Give chemical test to distinguish : Formaldehyde and acetaldehyde.