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Zinc Ion

34.Compound A...

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34.Compound A C8H9Br gives a white precipitate when warmed with alcoholic AgNO3 oxidation of A give an acid B C8H6O4 (B) easily form anhydride on heating identify compound A

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Q. The compound 'X' reacts with ammonical

A g N O_{3}

to give a white precipitate and on oxidation with hot alkaline

K M n O_{4}

(C H_{3})_{2} C H C O O H

. Therefore, 'X' is:

A (C_{4} H_{10} O)

on oxidation with acidified potassium dichromate gives carboxylic acid

B

(C_{4} H_{8} O_{2})

. Compound A when dehydrated with conc.

H_{2} S O_{4}

D (C_{4} H_{10} O)

which is an isomer of

A

D

is resistant to oxidation but compound

A

can be easily oxidised. Identify

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D

and write their structures.

Q. Compounds X and Y give effervescence with

N a_{2} C O_{3}

solution. X gives a white precipitate with ammonical

A g N O_{3}

while Y has given a sweet-smelling compound on heating with alcohol. X and Y are:

Q. A compound A having molecular formula

C_{4} H_{9} B r

on reaction with alcoholic

K O H

gives a compound B. Bromination of B gives compound C. compound C on treatment with soda lime gives a gaseous compound D. The gas D when passed through ammonical silver nitrate solution forms white precipitate. Identify A, B, C and D and write the reactions involved.

Q. Which of the compounds is soluble in conc.

H_{2} S O_{4}

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C C l_{4}

and give a white precipitate with

A g N O_{3}

N H_{4} O H

but does not give a precipitate with

A g N O_{3}

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