A compound `A (C_2H_4O_2)` reacts with Na metal to form a compound 'B' and evolved a gas which burns with a pop sound. Compound 'A' on treatment with an alcohol 'C' in presence of an acid forms a Sweet smelling compound 'D' `(C_4H_8O_2)`. On addition of NaOH to 'D' gives back B and C. Identify C and D write the reactions involved.

A compound A (C_(2)H_(4)O_(2)) reacts with Na metal to form a compound 'B' and evolves a gas which burns with a pop sound. Compound 'A' on treatment with an alcohol 'C' in the presence of an acid forms a sweety smelling compound 'D' (C_(4)H_(8)O_(2)) . On addition of naoH to 'D' gives back B and C. Identify A,B,C and D. Write the reaction involved. OR (a) Explain why carbon forms covalent bond? Give two reasons for carbon forming a large number of compounds. (b) Explain the structure of ammonia molecule.

A compound 'P' having molecular formula, C_3 H_6 O_2 reacts with Na metal to form a compound 'Q' and evolves a gas which burns with a pop sound. Compound 'P' on treatment with an alcohol 'R' in presence of an acid forms a sweet smelling compound 'S' having molecular formula, C_5 H_(10) O_2 . On addition of NaOH to 'P', it gives 'Q' and water. 'S' on treatment with NaOH solution gives back 'Q' and 'R'. Identify P, Q, R and S.

A compound C (molecular formula, C_(2)H_(4)O_(2) ) reacts with Na metal to form a compounds R and evolves a gas which burns with a pop sound. Compound C on treatment with an alcohol A in the presence of an acid form a sweet smelling compound S (molecular formula, C_(3)H_(6)O_(2)) . On addition of NaOH to C, it also gives R and water.S on treatment with NaOH solution gives back R and A. Identify C,R,A,S and write down the reactions involved.

An element A reacts with water to form a compound B which is used in white washing. The compound B on heating forms an oxide C which on treatment with water gives back B. Identify A, B and C and give the reactions involved.

A hydrocarbon 'A' (C_(4)H_(8)) on reaction HCl gives a compound 'B', (C_(4)H_(9)Cl) which on reaction with 1 mol of NH_(3) gives compounds 'C' (C_(4)H_(11)N) . On reacting with NaNO_(2) and HCl followed by treatment with water compound 'C' yields an optically active alcohol, 'D'. Ozonolysis of 'A' given 2mols of acetyldehyde. Identify compound 'A' to 'D'. Explain the reaction involved.

A compound (A) on oxidation gives B (C_(2)H_(4)O_(2)) . (A) also reacts with dil. NaOH and on subsequent heating forms (C). The compound (C) on catalytic hydrogenation gives (D). Identify A, B, C, D and write down the reactions involved.