The pair of compounds that can exist together is

1. FeCl3, SnCl2             

2. HgCl2, SnCl2

3. FeCl2, SnCl2             

4. FeCl3, KI

Subtopic:  Introduction to Redox and Oxidation Number | Oxidizing & Reducing Agents |
NEET - 2014
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In which of the following compounds, nitrogen exhibits highest oxidation state?

1. N2H                

2. NH3

3. N3H                   

4. NH2OH

Subtopic:  Oxidizing & Reducing Agents |
 54%
From NCERT
NEET - 2012
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A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the

reaction which element undergoes a maximum change in the oxidation number?

1. S

2. H

3. Cl

4. C

Subtopic:  Oxidizing & Reducing Agents |
 55%
NEET - 2012
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The oxidation states of P in H4P2O5, H4P2O6, H4P2O7, are respectively -

1. +3, +5, +4 2. +5, +3, +4
3. +5, +4, +3 4. +3, +4, +5
Subtopic:  Oxidizing & Reducing Agents |
 85%
From NCERT
NEET - 2010
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Oxidation numbers of P in PO43-, of S in SO42- and that of Cr in Cr2O72- are respectively,

1. +5, +6 and +6                     

2. +3, +6 and +5

3. +5, +3 and +6                     

4. -3, +6 and +6

Subtopic:  Balancing of Equations |
 86%
From NCERT
NEET - 2009
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The number of moles of MnO-4 required to oxidise one mole of ferrous oxalate completely in an acidic medium is-

1. 0.6 mole

2. 0.4 mole

3. 7.5 moles

4. 0.2 mole

Subtopic:  Oxidizing & Reducing Agents | Redox Titration & Type of Redox |
From NCERT
NEET - 2008
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Links
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Which of the following oxidation states are the most characteristics for lead and tin respectively?

1. +4, +2                     

2. +2, +4

3. +4, +4                     

4. +2, +2

Subtopic:  Oxidizing & Reducing Agents |
 57%
From NCERT
NEET - 2007
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Which one of the following orders correctly represents the increasing acid strengths of the given acids?

(1) HOCl <HOClO <HOClO< HOClO3

(2) HOClO <HOCl <HOClO<HOClO2

(3) HOClO<HOClO<HOClO <HOCl

(4) HOClO3> HOClO<HOClO <HOCl

Subtopic:  Oxidizing & Reducing Agents |
 75%
NEET - 2007
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The correct order of N-compounds in its decreasing order of oxidation states is :

1. HNO3, NO, N2, NH4Cl

2. HNO3NONH4ClN2

3. HNO3NH4ClNON2

4. NH4ClN2NOHNO3

Subtopic:  Oxidizing & Reducing Agents |
 65%
From NCERT
NEET - 2018
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For the redox reaction,
 aMnO4-+bC2O42-+cH+dMn2++eCO2+fH2O
the correct stoichiometric coefficients of the reactants a, b, and c respectively for the balanced equation are: 

1. 16, 5, 2
2. 2, 5, 16
3. 2, 16, 5
4. 5, 16, 2

Subtopic:  Balancing of Equations |
 79%
From NCERT
NEET - 2018
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