(A) HOCl + H 2 O 2 → H 3 O + + Cl - + O 2 (B) I 2 + H 2 O 2 + 2 OH - → 2 I - + 2 H 2 O + O 2 Choose the correct option.

H 2 O 2 acts as reducing agent in equations ( A ) and ( B ) .

H 2 O 2 act as oxidizing and reducing agent respectively in equations ( A ) and ( B ) .

H 2 O 2 acts as oxidising agent in equations ( A ) and ( B ) .

H 2 O 2 acts as reducing and oxidising agent respectively in equations ( A ) and ( B ) .

Both oxidizing and reducing agent

Neither oxidizing nor reducing agent

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

Match List-I with List-II : List-I Chemical Compound List-II Used as a Sucralose i Synthetic detergent b Glyceryl ester of stearic acid ii Artificial sweetener c Sodium benzoate iii Antiseptic d Bithional iv Food preservative Choose the correct match :

( a ) - ( ii ) , ( b ) - ( i ) , ( c ) - ( iv ) , ( d ) - ( iii )

( a ) - ( iv ) , ( b ) - ( iii ) , ( c ) - ( ii ) , ( d ) - ( i )

( a )-( iii ), ( b )-( ii ), ( c ) - ( iv ) , ( d ) - ( i )

( a ) - ( i ) , ( b ) - ( ii ) , ( c ) - ( iv ) , ( d ) - ( iii )

Hydrogen peroxide in its reaction with KIO 4 and NH 2 OH respectively, is acting as a

reducing agent, oxidising agent

oxidising agent, oxidising agent

oxidising agent, reducing agent

MEDIUM

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Important Questions on Hydrogen

HARD

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

(A) $HOCl + H_{2} O_{2} \to H_{3} O^{+} + {Cl}^{-} + O_{2}$

(B) $I_{2} + H_{2} O_{2} + 2 {OH}^{-} \to 2 I^{-} + 2 H_{2} O + O_{2}$

Choose the correct option.

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

What is the product of the reaction of

H_{2} O_{2}

with

{Cl}_{2} ?

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

H_{2} O_{2}

MEDIUM

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

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

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

Decomposition of hydrogen peroxide can be prevented by adding

MEDIUM

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

The correct statements about $H_{2} O_{2}$ are :

(A) used in the treatment of effluents.

(B) used as both oxidising and reducing agents.

(D) miscible with water.

Choose the correct answer from the options given below :

MEDIUM

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

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>Hydrogen>Hydrogen Peroxide

From the following statements, choose the incorrect statement regarding

H_{2} O_{2}

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

Match List-I with List-II :

	List-I Chemical Compound		List-II Used as
a	Sucralose	i	Synthetic detergent
b	Glyceryl ester of stearic acid	ii	Artificial sweetener
c	Sodium benzoate	iii	Antiseptic
d	Bithional	iv	Food preservative

Choose the correct match :

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

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

HARD

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

F e^{3 +}

is reduced to

F e^{2 +}

by using

HARD

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

Among statements

(a) - (d)

, the correct ones are:

(a)

Decomposition of hydrogen peroxide gives di-oxygen.

(b)

Like hydrogen peroxide, compounds, such as

K C l O_{3}, P b (N O_{3})

and

{N a N O}_{3}

When heated liberate di-oxygen.

(c)

2

-Ethylanthraquinone is useful for the industrial preparation of hydrogen peroxide.

(d)

Hydrogen peroxide is used for the manufacture of sodium perborate.

MEDIUM

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

The reaction of aqueous

K M n O_{4}

with

H_{2} O_{2}

in acidic conditions gives:

MEDIUM

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

In basic medium,

H_{2} O_{2}

exhibits which of the following reactions?
(A)

{Mn}^{2 +} \to {Mn}^{4 +}

(B)

I_{2} \to I^{-}

(C)

PbS \to {PbSO}_{4}

Choose the most appropriate answer from the options given below :

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

Hydrogen peroxide, in the pure state, is :

MEDIUM

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

Hydrogen peroxide in its reaction with KIO₄ and NH₂OH respectively, is acting as a

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

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

MEDIUM

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

5.0 mL

\underline{X}

volume hydrogen peroxide solution on decomposition produces

100 mL

of oxygen at STP. The value of

\underline{X}

MEDIUM

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

When

2.0 mL

15.18 % (w / v) H_{2} O_{2}

solution is decomposed the volume of oxygen liberated at

STP

EASY

Chemistry>Inorganic Chemistry>Hydrogen>Hydrogen Peroxide

The chemical nature of hydrogen peroxide is:

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Important Questions on Hydrogen

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