Redox Reactions - Chemistry | NEET Online Mock Test

Online Mock Test Description

Mock Test	Redox Reactions
Exam	NEET Medical Test
Subject	Chemistry
Marks	100
No. Questions	50 Questions
Time	50 Minutes

Redox Reactions - NEET (Chemistry)

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Acid base reaction

Disproportionation reaction

Oxidation reaction only

Decomposition reaction

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As + x HNO₃ → H₃AsO₄ + yNO₂ +H₂O
x, y cab be -

6, 6

2, 2

4, 4

5, 5

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M/1

M/3

M/2

M/5

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The average oxidation state of N atom in HN₃ is

+ (1/3)

- (1/3)

-3

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The half-cell reactions are
Pb²⁺(aq) + 2e^- → Pb(s) E⁰ = -0.13 V
Ag(s) → Ag⁺ (aq) + e^- E⁰ = -0.80 V
Calculate standard EMF.

0.67 V

0.93 V

-0.93 V

1.47 V

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The equivalent mass of Fe₂S₃ in the below reaction is, if its Molar Mass is 'M'
Fe₂S₃ + O₂ → Fe₂O₃ + SO₃

M/2

M/20

M/22

M/24

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xBrO₃^- + yl^- + zH⁺ → Br^- + al₂ + bH₂O
The values of y and b are respectively

6, 6

3, 6

6, 3

3, 3

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The number of moles of ferrous oxalate oxidised by one mole of KMnO₄ in an acidic medium is-

5/3

3/5

6/5

1/5

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Cl₂ + OH^- → CI^- + CIO₃^- + H₂O Coefficient of Cl₂, Cl^-
and CIO₃^- are respectively

4, 5 and 6

3, 5 and 6

3, 5 and 1

3,5 and 2

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The n-factor of SO₂ in the following reaction is:
K₂Cr₂O₇+ SO₂ + H₂SO₄ → K₂SO₄ + Cr₂ (SO₄)₃ + H₂O

3/2

6/4

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The oxidation number of S in S₂O₄^2- and Mg in Mg₃N₂ respectively are

+1, +2

+3, +1

+2, +3

+3, +2

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The equivalent mass of K₂Cr₂O₇ in the given reaction is [K = 39, Cr = 52, O = 16]
K₂Cr₂O₇ → Cr₂(SO₄)₃

31.6

152

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In the following reaction 4P + 3KOH+ 3H₂O → 3KH₂PO₂ + PH₃

'P' is oxidised only

'P' is reduced only

'P' is oxidised as well as reduced

P' is neither oxidised nor reduced

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The number of moles of K₂Cr₂O₇ reduced by one mole of Sn²⁺ ions is

1/3

1/6

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Cu₂S + 4SO₄^2- + xH⁺ → xCu²⁺ + ySO₃^2- + H₂O
For the balanced equation

x = 2, y = 5

x = 5, y = 2

x = 5, y = 3

x = 1, y = 5

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Equivalent weight of Mohr's salt in the titration with KMnO₄ is (M Mol wt.)

M/4

M/3

M/2

M/1

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(NH₄)₂ Cr₂O₇(s) → N₂(g) + Cr₂O₃(s) + 4H₂O(g)
The above reaction is known as

Intramolecular redox reaction

Disproportionation reaction

Comproportionation reaction

Non redox reaction

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The oxidation states of S atoms in Caro's and Marshall acid are respectively

+6, +6

+8, +8

+6, +4

+4, +6

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K₂Cr₂O₇ + 14HCI → 2KCI + 2CrCl₃ + 7H₂O + 3Cl₂
In this reaction, equivalent weight of HCI becomes

36.5

90.5

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The number of peroxide linkages in CrO₅ is

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Oxidation state of oxygen in KO₂ is

-1

-(1/2)

-2

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The number of moles of Potassium dichromate required to titrate 12 moles of Ferrous oxalate in an acidic medium will be

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The oxidation number of N in N₂H₅⁺ is

-3

-2

-1

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2MnO₄^- + 5H₂O₂+ 6H⁺ → 2Z +5O₂ + 8H₂O
In this reaction Z is

Mn⁺²
Mn⁺⁴
MnO₂
MnO₄^-2

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For the reaction
M^x+ + MnO₄^- → MO₃^- + Mn²⁺ + (1/2)O₂. If one mole of MnO₄^- oxidises 1.67 moles of M^x+ to MO₃^-, then the value of x in the reaction is

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The ratio of the equivalent weight of KMnO₄ in acidic and neutral medium is

5 : 3

3 : 5

5 : 1

1 : 5

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Oxidation states of 'C' in C₃O₂ are respectively

+2, 0, +2

2 for all the 'C'

+2, +2 and -1

0, 0, +2

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xZn + уNO₃^- + ZH₂O → xZn⁺² + yNH₄⁺ + (z+3y) OH^- values of x, y and z will be respectively

2,1,7

4,1,7

4,1,2

2,2,7

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5 mole of a mixture of FeSO₄. (NH₄)₂SO₄.6H₂O and Fe₂(SO₄)₃ required 400 ml 0.5M KMnO₄ for complete oxidation in acidic medium. Then % of moles of Fe₂(SO₄)₃ in the mixture is

20%

40%

60%

80%

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Which of the following are the examples of disproportionation reactions?

[Ag(NH₃)₂]⁺ + 2H⁺ → Ag⁺ + 2NH₄⁺
Cl₂ + 2OH^- → Cl^- + CIO^- + H₂O
NaOH + HCl → NaCl + H₂O
SnCl₂ + 2HgCl₂ → SnCl₄ + Hg₂Cl₂

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Redox Reactions – Chemistry | NEET Online Mock Test

Online Mock Test Description

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