An unknown aldehyde A on reaction with alkali gives a `beta`- hydroxy aldehyd, which loses water to form an unsaturated aldehyde, But-2-enal. Another aldehyde 'B' disproporationation reaction in the presence of conc, alkali to form products C and D. C is an aryl alcohol wit the formula (`C_(2)H_(8))`
(1) Identify A and B.
(ii) Write the sequence of reactions involved.
(iii) Name the product, when B reacts with Zn amalgam and hydrochloric acid.

An unknown aldehyde 'A' on reacting with alkali gives a beta hydroxy aldehyde, which losses water to form an unsaturated aldehyde, but-2-enal. Another aldehyde 'B' undergoes disproportionation reaction in the presence of conc alkali to form products 'C' and 'D'. 'C' is an aryl alcohol with formula C_7H_8O : Identify A and B.

An unknown aldehyde [A] on reacting with alkali gives beta -hydroxyaldehyde which loses water to form an unsaturated but-2-enal. Another aldehyde [B] undergoes disproportionation reaction in the presence of conc. Alkali to form products [C] and [D]. The compound [C] is an aryl alcohol with formula C_(7)H_(8)O . (i) Identify [A] to [B]. , (ii) Write the sequence of reactions involved. (iii) Name the proucts when , [B] reacts with zinc amalgam and hydrochloric acid.

An unknown aldehyde [A] on reacting with alkali gives beta -hydroxyaldehyde which loses water to form an unsaturated but-2-enal. Another aldehyde [B] undergoes disproportionation reaction in the presence of conc. Alkali to form products [C] and [D]. The compound [C] is an aryl alcohol with formula C_(7)H_(8)O . (i) Identify [A] to [B]. , (ii) Write the sequence of reactions involved. (iii) Name the proucts when , [B] reacts with zinc amalgam and hydrochloric acid.

An unknown aldehyde 'A' on reacting with alkali gives a beta hydroxy aldehyde, which losses water to form an unsaturated aldehyde, but-2-enal. Another aldehyde 'B' undergoes disproportionation reaction in the presence of conc alkali to form products 'C' and 'D'. 'C' is an aryl alcohol with formula C_7H_8O : Write the sequence of reactions involved

An unknown aldehyde 'A' on reacting with alkali gives a beta hydroxy aldehyde, which losses water to form an unsaturated aldehyde, but-2-enal. Another aldehyde 'B' undergoes disproportionation reaction in the presence of conc alkali to form products 'C' and 'D'. 'C' is an aryl alcohol with formula C_7H_8O : Name the product, when 'B' reacts with zinc amalgam and hydrochloric acid.

Which of the following reaction will give beta -keto aldehyde as the final product ?