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IMPORTANT

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Which of the following aqueous solution of cation(s) give(s) white precipitate with $NaOH$ and ${NH}_{4} OH$ solution and formed precipitate is/are further completely dissolved in one of the excess reagent?

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Important Questions on Qualitative Inorganic Salt Analysis

MEDIUM

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 8 - Qualitative Inorganic Salt Analysis>DPP>Q 17

Saturated solution of

{SO}_{2}

is heated at

150 ° C

in a closed container. The product obtained is treated with

{BaCl}_{2}

solution. What is/are the most suitable observation(s)?

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 8 - Qualitative Inorganic Salt Analysis>DPP>Q 18

{Cu}^{2 +}

and

{Cd}^{2 +}

can be distinguished by which of the following reagent(s).

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 8 - Qualitative Inorganic Salt Analysis>DPP>Q 19

White precipitate in test tube "c" and the soluble complex formed from white precipitate with the hypo solution is/are (This question from book is not having information hence the question is reframed as given below).

A salt solution when treated with ammonia forms a white precipitate. On addition of excess ammonia, the precipitate is insoluble. When the same solution is treated with hypo white precipitate is formed; when in excess amount of hypo is completely soluble. When the white precipitate formed from treatment of hypo is heated, it turns black. Identify the white precipitate and its soluble complex.

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 8 - Qualitative Inorganic Salt Analysis>DPP>Q 1

When a white crystalline compound

x

is heated with

K_{2} {Cr}_{2} O_{7}

and concentrated

H_{2} {SO}_{4},

a reddish-brown gas

A

is evolved. On passing

A

into caustic soda solution a yellow coloured solution of

B

is obtained. Neutralising the solution of

B

with acetic acid and on subsequent addition of lead acetate, a yellow precipitate

C

is obtained. When

x

is heated with

NaOH

solution, a colourless gas is evolved and on passing this gas into

K_{2} {HgI}_{2}

solution, a reddish-brown precipitate

D

is formed. Identify

A, B, C, D

and

x

. Write the equations of all the reactions involved.

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 8 - Qualitative Inorganic Salt Analysis>DPP>Q 2

Calcium burns in nitrogen to produce a white powder which dissolves in sufficient water to produce a gas

(A)

and an alkaline solution. The solution on exposure to air produces a thin solid layer of

(B)

on the surface. Identify the compounds

A

and

B

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 8 - Qualitative Inorganic Salt Analysis>DPP>Q 3

An aqueous blue coloured solution of a transition metal sulphate reacts with

H_{2} S

in acidic medium to give a black precipitate

A

, which is insoluble in the warm aqueous solution of

KOH

. The blue solution, on treatment with

KI

in weakly acidic medium, turns yellow and produces a white precipitate

B

. Identify the transition metal ion. Write the chemical reactions involved in the formation of

A

and

B

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 8 - Qualitative Inorganic Salt Analysis>DPP>Q 4

A white substance A reacts with dilute

H_{2} {SO}_{4}

to produce a colourless gas

B

and a colourless solution

C

. The reaction between

B

and acidified

K_{2} {Cr}_{2} O_{7}

solution produces a green solution and a slightly coloured precipitate

D

. The substance

D

burns in air to produce a gas

E

which reacts with

B

to yield and a colourless liquid. Anhydrous copper sulphate is turned blue on the addition of this colourless liquid Addition of aqueous

{NH}_{3}

NaOH

C

produces first a precipitate, which dissolves in the excess of the respective reagent to produce a clear solution in each case. Identify

A, B, C, D

and

E

. Write the equations of the reactions involved.

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 2 JEE Main & Advanced>Chapter 8 - Qualitative Inorganic Salt Analysis>DPP>Q 5

An inorganic salt solution gives a yellow precipitate with silver nitrate. The precipitate dissolves in dilute nitric acid as well as in ammonium hydroxide. The solution contains

Which of the following aqueous solution of cation(s) give(s) white precipitate with NaOH and NH4OH solution and formed precipitate is/are further completely dissolved in one of the excess reagent?

Important Questions on Qualitative Inorganic Salt Analysis

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Which of the following aqueous solution of cation(s) give(s) white precipitate with $NaOH$ and ${NH}_{4} OH$ solution and formed precipitate is/are further completely dissolved in one of the excess reagent?