A bluish grey metal ( A ) has high density and readily dissolves in medium concentrated HNO 3 and liberates a gas ( B ) which on mixing with air turns into red coloured gas ( C ) . Metal is little affected by dil. HCl or H 2 SO 4 The solution containing bipositive ions of ( A ) gives red precipitate ( D ) when H 2 S is passed in the presence of saturated solution of KCl . ' D ' on dilution, turns black forming E and F . Identify A to F .

The reddish brown coloured gas C has to be NO 2 , hence the gas B has to be NO . As the metal is not affected by HCl or H 2 SO 4 , it should be lead, as it forms a protective coating of the respective insoluble salts with these acids on the surface which prevents further reaction. The reactions for the entire process are as follows: (i) 3 Pb ( A ) + 8 HNO 3 ⟶ 3 Pb NO 3 2 + 2 NO ↑ ( B ) Nitric oxide + 4 H 2 O (ii) 2 NO + O 2 ⟶ 2 NO 2 ↑ Nitrogen dioxide ( C ) (iii) The metal is not affected by the acids HCl or H 2 SO 4 as an insoluble layer of PbCl 2 or PbSO 4 will get deposited on the surface, which will not allow further reaction (iv) 2 Pb 2 + + H 2 S + 2 Cl - ⟶ Pb 2 SCl 2 + 2 H + Lead sulpho chloride ( D ) (v) Pb 2 SCl 2 ⟶ PbS ( E ) black + PbCl 2 F

HARD

JEE Advanced

IMPORTANT

Earn 100

Predict the result of reacting ${Pb}_{3} O_{4}$ with concentrated hydrochloric acid.

Important Questions on p-Block Group 14 (The Carbon Family)

HARD

JEE Advanced

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 1 JEE Main & Advanced>Chapter 7 - p-Block Group 14 (The Carbon Family)>DPP>Q 5

A scarlet red compound

(A),

is treated with concentrated

{HNO}_{3}

to give a chocolate brown precipitate

(B) .

The precipitate is filtered, and the filtrate is neutralized with

NaOH

. Addition of

KI

to the resulting solution gives a yellow precipitate

(C) .

The precipitate

(B)

, on warming with concentrated

{HNO}_{3}

in the presence of

Mn {({NO}_{3})}_{2}

, produces a pink-coloured solution due to the formation of

(D) .

Identify

(A), (B), (C)

and

(D) .

Write the reaction sequence.

EASY

JEE Advanced

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 1 JEE Main & Advanced>Chapter 7 - p-Block Group 14 (The Carbon Family)>DPP>Q 6

{Sn}^{2 +}

and

{Fe}^{3 +}

cannot coexist in the same solution.

HARD

JEE Advanced

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 1 JEE Main & Advanced>Chapter 7 - p-Block Group 14 (The Carbon Family)>DPP>Q 7

What happens when dilute nitric acid is slowly reacted with tin?

EASY

JEE Advanced

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 1 JEE Main & Advanced>Chapter 7 - p-Block Group 14 (The Carbon Family)>DPP>Q 7

What happens when carbon and steam are heated?

EASY

JEE Advanced

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 1 JEE Main & Advanced>Chapter 7 - p-Block Group 14 (The Carbon Family)>DPP>Q 7

What happens when tin is treated with concentrated nitric acid?

HARD

JEE Advanced

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 1 JEE Main & Advanced>Chapter 7 - p-Block Group 14 (The Carbon Family)>DPP>Q 8

A bluish grey metal

(A)

has high density and readily dissolves in medium concentrated

{HNO}_{3}

and liberates a gas

(B)

which on mixing with air turns into red coloured gas

(C) .

Metal is little affected by dil.

HCl

H_{2} {SO}_{4}

The solution containing bipositive ions of

(A)

gives red precipitate

(D)

when

H_{2} S

is passed in the presence of saturated solution of

KCl .' D'

on dilution, turns black forming

E

and

F

. Identify

A

F

EASY

JEE Advanced

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 1 JEE Main & Advanced>Chapter 7 - p-Block Group 14 (The Carbon Family)>DPP>Q 9

When the pre-haematite is burnt in air with coke around

2000 ° C

along with lime, the process not only produces steel but also produces a silicate slag that is useful in making building materials such as cement. Discuss the same and show through balanced chemical equations.

EASY

JEE Advanced

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry Part - 1 JEE Main & Advanced>Chapter 7 - p-Block Group 14 (The Carbon Family)>DPP>Q 10

If a trivalent atom replaces a few silicon atoms in three-dimensional networks of silicon dioxide, what would be the type of charge on overall structure?

Predict the result of reacting Pb3O4 with concentrated hydrochloric acid.

Important Questions on p-Block Group 14 (The Carbon Family)

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Predict the result of reacting ${Pb}_{3} O_{4}$ with concentrated hydrochloric acid.