When metal 'X' is treated with sodium hydroxide, a white precipitate (A) is obtained, which is soluble in excess of NaOH to give soluble complex (B). Compound (A) is soluble in dilute HCl to form compound (C). The compound (A) when heated strongly gives (D), which is used to extract metal. Identify ( 'X' ), (A), (B), (C) and (D). Write, suitable equations to support their identities.

CH_(3)CO_(2)C_(2)H_(5) on reaction with sodium ethoxide in ethanol gives (A), which on heating in the presence of ac gives (B). Compound (B) is:

(X) on treatment with sodium hydroxide followed bythe addition of silver nitrate gives white precipitate at room temperature which is soluble in NH_4OH . (X) can be:

A ketone (A) which undergoes halaform reaction gives compound (B) an reduction. (B) on heating with H_2 SO_4 gives (C) which forms monoozonide (D). (D) on hydrolysis in presence of zinc -dust gives only accetaldehyde. Identify (A) (B) and (C). Write the reactions invoived.

An organic compound A reacts with metalic sodium in ether medium to form ethane. A also reacts with magnesium in ether medium to give B, which on hydrolysis gives methane. Identify A and B. Write down the chemical equation involved.

A, white powder (A) whén heated gave off a coloúrless gas (B) which turns the lime water milky. The residue (C) was yellow when hot but turned white on cooling. Identify '(A),(B)' and '(C)' Write the equation for the action of heat on (B).

Primary alkyl halide C_4 H_9 Br (a) reacted with alcoholic K O H to give compound (b). Compound (b) is reacted with HBr to give (c) which is an isomer of (a). When (a) is reacted with sodtum metal it gives compound (d), C_ 8 H_ 18 which, is different from the compound formed when n-butyl bromide is reacted with sodium. Give the structural formula of (a) and write the equations for all the reactions.

Benzamide (C_6H_5CONH_2) on heating with bromine and NaOH gave a compound A which is soluble in dilute acid. When A is warmed with chloroform and alc KOH, B is formed which has an unpleasant odour. What is reaction called as?

When a white crystalline compound 'X' is heated with K_(2)Cr_(2)O_(7) and concentrated H_(2)SO_(4) a red dish brown gas 'A' is evolved. On passing 'A' into caustic soda solution, a yellow coloured solution of 'B' is obtained. Neutralising the solution 'B' with acetic acid and on subsequent addition of lead acetate a yellow precipitate C is obtained. When 'X' is heated with NaOH a colourless gas is evolved and on passing this a gas into K_(2)HgI_(4) (Nessler's reagent) solution a reddish brown precipitate D is formed. Identify '(A), (B), (C), (D) and X. Write equations for the reactions involved.