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Standard XII

Chemistry

Oxides of Nitrogen

An organic ha...

Question

An organic halide is shaken with aqueous NaOH followed by the addition of dil. $H N O_{3}$ and silver nitrate solution and gives white ppt. The substance can be

C_{6} H_{4} (C H_{3}) B r

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C_{6} H_{5} C H_{2} C l

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C_{6} H_{5} C l

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None of these

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Solution

The correct option is A $C_{6} H_{5} C H_{2} C l$
$C_{6} H_{5} C H_{2} C l a q . N a O H - ----- \to C_{6} H_{5} C H_{2} O H$
hence B is correct answer

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Similar questions

Q. Metal nitrate

(A)

on heating decomposes, leaving a residue

(B)

which goes into the solution with dil.

H C l

. The solution of

(B)

gives a white ppt. with an ammonium carbonate solution. Ppt.

C

dissolves in dil.

H C l

and the solution is treated with potassium chromate to yellow ppt.

(D)

. Solution

V

with dil.

H_{2} S O_{4}

also gives white ppt.

(E)

insoluble in dil.

H C l

and nitric acid. Precipitate

(E)

is part of white pigment lithopone.

The yellow precipitate

(D)

is:

A black colored compound (A) on reaction with dilute

H_{2} S O_{4}

gives a gas (B) which on passing in a solution of acid (C) gives white turbidity (D). Gas (B) when placed in an acidified solution of a compound (E) gives a precipitate (F) soluble in dilute

H N O_{3} .

After boiling this solution, when an excess of

N H_{4} O H

is added, blue colored compound (G) is formed. To this solution on addition of

C H_{3} C O O H

and aqueous

K_{4} [F e (C N)_{6}]

, a chocolate precipitate (H) is obtained. On the addition of an aqueous solution of

B a C l_{2}

to an aqueous solution of E, a white ppt insoluble in

H N O_{3}

is obtained.

Identify B.

Q. Give reasons for the following : [4 MARKS]
(a) An aqueous solution of chlorine is acidic in nature.
(b) Silver nitrate solution can be used to distinguish HCl from

H N O_{3}

Q. An inorganic halide

(A)

gives the following reations:
(i) the cation of

(A)

on reaction with

H_{2} S

H C l

medium, gives a black ppt. of

(B)

(A)

neither gives ppt. with

H C l

nor blue colour with

K_{4} F e (C N)_{6}

.
(ii)

(B)

on heating with dil.

H C l

gives back compound

(A)

and a gas

(C)

which gives a black ppt. With lead acetate solution.
(iii) the anion of

(A)

gives chromyl chloride test.
(iv)

(B)

dissolves in hot dil.

H N O_{3}

to give a solution,

(D)

(D)

gives ring test.
(v) when

N H_{4} O H

solution is added to

(D)

, a white precipitate

(E)

is formed.

(E)

dissolves in minimum amount of dil.

H C l

to give a solution of

(A)

. Aqueous solution of

(A)

on addition of water gives a whitish turbidity

(F)

.
(vi) aqueous solution of

(A)

on warming with alkaline sodium stannite gives a black precipitate of a metal

(G)

and sodium stannate. The metal

(G)

dissolves in hydrochloride acid to give solution of

A

Identify

(F)

and

(G)

and give balanced chemical equations of reactions.

(X)

on treatment with sodium hydroxide followed by the addition of silver nitrate gives white precipitate at room temperature which is soluble in

{N H}_{4} O H

(X)

can be:

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An organic halide is shaken with aqueous NaOH followed by the addition of dil. HNO3 and silver nitrate solution and gives white ppt. The substance can be

The correct option is A C6H5CH2ClC6H5CH2Claq.NaOH−−−−−−→C6H5CH2OHhence B is correct answer

An organic halide is shaken with aqueous NaOH followed by the addition of dil. $H N O_{3}$ and silver nitrate solution and gives white ppt. The substance can be

The correct option is A $C_{6} H_{5} C H_{2} C l$
$C_{6} H_{5} C H_{2} C l a q . N a O H - ----- \to C_{6} H_{5} C H_{2} O H$
hence B is correct answer