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Common Ion Effect

A compound X ...

Question

A compound X has the formula $C_{2} C l_{3} O H$ . It gives a red precipitate of $C u_{2} O$ with Fehling solution. Then X is :

A

chloral

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B

chloretone

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C

chloropicrin

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D

chloroform

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Solution

The correct option is A chloral
Chloral gives a red precipitate with fehling solution.

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Q. Fehling solution gives red precipitate with:

Q. Which of the following aldehydes give red precipitate with Fehling solution?

Q. An organic compound (A) with molecular formula

C_{8} H_{8} O

forms an orange-red precipitate with 2,4 DNP and gives a yellow precipitate of compound (B) on treatment with iodine and sodium hydroxide solution. Compound (A) does not give Tollen's or Fehling test but on drastic oxidation with potassium permanganate, it gives (C) which on reaction with thionyl chloride gives a compound (D) having formula

C_{7} H_{5} O C l

. (D) on reaction with compound (E) having general formula

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gives back (A)/ Identify (A), (B), (C), (D) and (E). Also, give chemical equations for the reaction involved.

A

has a molecular formula

C_{2} C l_{3} O H

. It reduces Fehling solution and on oxidation produces a mono carboxylic acid

B

A

can also be obtained by the action of

C l_{2}

A

Q. Which of the following does not give brick red precipitate with Fehlings solution?

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