HARD

Earn 100

Consider the following molecules : ${Br}_{3} O_{8}, F_{2} O, H_{2} S_{4} O_{6}, H_{2} S_{5} O_{6}$ , and $C_{3} O_{2}$ . Count the number of atoms existing in their zero oxidation state in each molecule. Their sum is

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Important Questions on Redox Reactions

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 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

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

{CH}_{4} (g) + 4 {Cl}_{2} (g) \to {CCl}_{4} (1) + 4 HCl (g)

In the above reaction, the change of oxidation state of carbon is

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The oxidation number of sulphur is

+ 4

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 correct structure of tribromooctaoxide is:

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 pair of compounds having metals in their highest oxidation state is

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

Two elements, X and Y have atomic numbers 33 and 17, respectively. The molecular formula of a stable compound formed between them is-

HARD

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The oxidation states of transition metal atoms in

K_{2} {Cr}_{2} O_{7}, {KMnO}_{4}

and

K_{2} {FeO}_{4},

respectively, are

x, y

and

z

. The sum of

x, y

and

z

is______

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

Identify the incorrect statement.

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The oxidation state of sulphur in

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

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

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

The oxidation number of nitrogen atoms in

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

are

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The metal with the highest oxidation state present in

K_{2} {CrO}_{4}, {NbCl}_{5} and {MnO}_{2}

is-

EASY

Chemistry>Physical Chemistry>Redox Reactions>Oxidation Number

The oxidation states of P atom in

P O C l_{3}, H_{2} P O_{3}

and

H_{4} P_{2} O_{6}

, respectively, are

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

Consider the following molecules : Br3O8, F2O,H2 S4O6,H2 S5O6, and C3O2. Count the number of atoms existing in their zero oxidation state in each molecule. Their sum is

Important Questions on Redox Reactions

Learn and Prepare for any exam you want !

Consider the following molecules : ${Br}_{3} O_{8}, F_{2} O, H_{2} S_{4} O_{6}, H_{2} S_{5} O_{6}$ , and $C_{3} O_{2}$ . Count the number of atoms existing in their zero oxidation state in each molecule. Their sum is