Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-1>Q 32

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A metal salt solution gives a yellow $ppt$ with silver nitrate. The $ppt$ dissolves in dil. nitric acid as well as in ammonium hydroxide. The solution contains

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Important Questions on Qualitative Analysis

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-1>Q 33

An inorganic salt is lemon yellow in colour. It becomes orange in colour like methyl orange when it is acidic and again becomes yellow when it is alkaline. The inorganic salt will be :

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-1>Q 34

Chromyl chloride test is performed for the confirmation of the presence of the following in mixture :

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 2

An inorganic lewis acid

[X]

gives gelatinous white ppt. With

{NH}_{4} OH

in presence of

{NH}_{4} Cl

.

[X]

will respond to which of the following characteristics

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 3

{SO}_{2}

and

{CO}_{2}

both turn lime water

(A)

milky,

{SO}_{2}

also turns

K_{2} {Cr}_{2} O_{7} / H^{+}

(B)

green while

O_{2}

is soluble in pyrogallol

(C)

turning it black. These gases are to detected in order by using these reagents. The order is

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 4

KI

solution identifies

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 5

Production of a green edged flame on igniting the vapours evolved by heating a given inorganic salt with a few

ml

of ethanol and concentrated

H_{2} {SO}_{4}

indicates the presence of:

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 6

When

{CS}_{2}

layer containing both

{Br}_{2}

and

I_{2}

is shaken with excess of

{Cl}_{2}

water, the violet colour due to

I_{2}

disappears and orange colour due to

{Br}_{2}

appears. The disappearance of violet colour is due to the formation of

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 7

On the addition of a solution containing

{CrO}_{4}^{2 -}

ions to the solution of

{Ba}^{2 +}, {Sr}^{2 +}

and

{Ca}^{2 +}

ions, the precipitate obtained first will be of: