Find A , B and C in the following reactions: NH 3 + A + CO 2 → NH 4 2 CO 3 NH 4 2 CO 3 + H 2 O + B → NH 4 HCO 3 NH 4 HCO 3 + NaCl → NH 4 Cl + C

A - H 2 O ; B - CO 2 ; C - NaHCO 3

A - H 2 O ; B - O 2 ; C - Na 2 CO 3

A - H 2 O ; B - O 2 ; C - NaHCO 3

A - O 2 ; B - CO 2 ; C - Na 2 CO 3

The following reactions show the H 2 O 2 behaviour in I and II reactions as: I. PbS s + 4 H 2 O 2 aq ⟶ PbSO 4 s + 4 H 2 O l II . HOCl + H 2 O 2 ⟶ H 3 O + + Cl - + O 2

Oxidising in acidic medium and reducing in acidic medium

Oxidising in acidic medium and reducing in basic medium

Reducing in acidic medium and oxidising in basic medium

Reducing in acidic medium and oxidising in acidic medium

Both oxidizing and reducing agent

Neither oxidizing nor reducing agent

Match List- I with List- II List- I List- II (a) Sodium Carbonate (i) Deacon (b) Titanium (ii) Castner-Kellner (c) Chlorine (iii) van-Arkel (d) Sodium hydroxide (iv) Solvay Choose the correct answer from the options given below:

a → iv , b → iii , c → i , d → ii

a → i , b → iii , c → iv , d → ii

a → iii , b → ii , c → i , d → iv

a → iv , b → i , c → ii , d → iii

EASY

Earn 100

Which of the following compound gives paramagnetic gas on heating:-

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Important Questions on Elements of Group 1 and Group 2

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

Which among the following gas is bubbled through the brine solution during the preparation of sodium carbonate in Solvay's process?

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

Hydrogen peroxide is stored away from light because it can get decomposed when exposed to light as

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

The gas produced when

Zn

metal is heated with aqueous

NaOH

MEDIUM

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

Products $(X$ and $Y)$ of the following reactions (I and II) are :
I. $\underset{(Cold and dil .)}{2 NaOH} + {Cl}_{2} ⟶ NaCl + X + H_{2} O$

II. $\underset{(Hot and conc .)}{6 NaOH} + 3 {Cl}_{2} ⟶ NaCl + Y + 3 H_{2} O$

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

A hydrated solid X on heating initially gives a monohydrated compound Y. Y upon heating above

373 K

leads to an anhydrous white powder Z. X and Z, respectively, are;

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

Sodium hydroxide is manufactured by

MEDIUM

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

Calcite crystals used in Nicol's prism are formed of

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

Find $A, B$ and $C$ in the following reactions:

${NH}_{3} + A + {CO}_{2} \to {({NH}_{4})}_{2} {CO}_{3}$

${({NH}_{4})}_{2} {CO}_{3} + H_{2} O + B \to {NH}_{4} {HCO}_{3}$

${NH}_{4} {HCO}_{3} + NaCl \to {NH}_{4} Cl + C$

MEDIUM

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

The reaction of aqueous

K M n O_{4}

with

H_{2} O_{2}

in acidic conditions gives:

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

Choose the incorrect statement.

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

The chemical nature of hydrogen peroxide is:

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

In which of the following reactions, hydrogen peroxide acts as an oxidizing agent?

MEDIUM

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

The following reactions show the $H_{2} O_{2}$ behaviour in $I$ and $II$ reactions as:
$\begin{array}{l} I. PbS (s) + 4 H_{2} O_{2} (aq) ⟶ {PbSO}_{4} (s) + 4 H_{2} O (l) \end{array}$

$II . HOCl + H_{2} O_{2} ⟶ H_{3} O^{+} + {Cl}^{-} + O_{2}$

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

What is the product of the reaction of

H_{2} O_{2}

with

{Cl}_{2} ?

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

H_{2} O_{2}

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

One of the by-products formed during the recovery of

{NH}_{3}

from Solvay process is:

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

Match List- $I$ with List- $II$

List- $I$		List- $II$
(a)	Sodium Carbonate	(i)	Deacon
(b)	Titanium	(ii)	Castner-Kellner
(c)	Chlorine	(iii)	van-Arkel
(d)	Sodium hydroxide	(iv)	Solvay

Choose the correct answer from the options given below:

HARD

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

Which of the following salt would give

{SO}_{2}

with hot and dil

H_{2} {SO}_{4}

and also decolourises

{Br}_{2}

water?

MEDIUM

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

Hydrogen peroxide oxidises

{[Fe {(CN)}_{6}]}^{4 -} to {[Fe {(CN)}_{6}]}^{3 -}

in acidic medium, but reduces

{[Fe {(CN)}_{6}]}^{3 -} to {[Fe {(CN)}_{6}]}^{4 -}

in alkaline medium. The other products formed are, respectively

MEDIUM

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Some Important Compounds of Elements of S-block

When

H_{2} O_{2}

is added to an acidified

K_{2} C r_{2} O_{7}

solution

Which of the following compound gives paramagnetic gas on heating:-

Important Questions on Elements of Group 1 and Group 2

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