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Oxidation state of $K$ in $K_{2} O, K_{2} O_{2}, {KO}_{2}$ is

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Important Questions on Redox Reactions

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The correct order of nitrogen compounds in their decreasing order of oxidation states is:

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The oxidation state of sulphur in

H_{2} S_{2} O_{7}

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

In the reaction of gold with aquaregia, oxidation state of Nitrogen changes from

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The oxidation number of the underlined atom in the following species is given. Identify the incorrect statement.

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The oxidation states of

Cr

[Cr {(H_{2} O)}_{6}] {Cl}_{3}, [Cr {(C_{6} H_{6})}_{2}]

and

K_{2} [Cr {(CN)}_{2} {(O)}_{2} (O_{2}) ({NH}_{3})]

, respectively, are:

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

What is the change in oxidation number of carbon in the following reaction?

{CH}_{4} (g) + 4 {Cl}_{2} (g) \to {CCl}_{4} + 4 HCl (g)

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

Oxidation number of potassium in

K_{2} O, K_{2} O_{2}

and

K O_{2},

respectively, is:

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

In how many of the following compounds of sulphur, the oxidation state of sulphur atom is $+ 6 ?$

$H_{2} S_{2} O_{8}, H_{2} {SO}_{5}, H_{2} {SO}_{3}, H_{2} {SO}_{4}, H_{2} S_{2} O_{7}, {SO}_{2} {Cl}_{2}, {SOCl}_{2}$

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The correct structure of tribromooctaoxide is:

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

In acidic medium,

H_{2} O_{2}

changes

C r_{2} O_{7}^{- 2}

C r O_{5}

which has two

(- O - O -)

bonds Oxidation state of

C r

C r O_{5}

is:

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The oxidation number of nitrogen atoms in

{NH}_{4}, {NO}_{3}

are

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

Identify the compound in which phosphorus exists in the oxidation state of +1.

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

Which among the following pair of elements show highest oxidation state

+ 7

in their different compounds ?

(

Atomic no.

Cr = 24, V = 23, Mn = 25, Cl = 17, S = 16)

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

Identify the incorrect statement.

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Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

What is the oxidation number of carbon in glucose?

HARD

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The heating of

{({NH}_{4})}_{2} {Cr}_{2} O_{7}

produces another chromium compound along with

N_{2}

gas. The change of the oxidation state of

Cr

in the reaction is

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The formal oxidation numbers of

C r

and

C l

in the ions

{Cr}_{2} O_{7}^{2 -}

and

C l O_{3}^{-}

, respectively are

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The oxidation number of sulphur in

S_{8}

molecule is

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The pair of compounds having metals in their highest oxidation state is

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

An element

X

shows

+ 3

, oxidation state in its compounds. Out of the four compounds given below, choose the incorrect formula for the element

X

Oxidation state of K in K2O,K2O2,KO2 is

Important Questions on Redox Reactions

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Oxidation state of $K$ in $K_{2} O, K_{2} O_{2}, {KO}_{2}$ is