The oxidation number of carbon in C3O2  and Mg2C3 are respectively:

1. -4/3, +4/3 

2. +4/3, -4/3

3. -2/3, +2/3

4. -2/3, +4/3

Subtopic:  Oxidizing & Reducing Agents |
 89%
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Among the following the correct order of acidity is-

1. HClO < HClO2< HClO3< HClO4
2. HClO2< HClO < HClO3< HClO4
3. HClO4< HClO2< HClO < HClO3
4. HClO3< HClO4< HClO2< HClO

Subtopic:  Oxidizing & Reducing Agents |
 85%
From NCERT
NEET - 2016
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The correct statement(s) about the given reaction is -

XeO6(aq)4-+2F-1(aq)+6H+(aq)
XeO3(g)+F2(g)+3H2O(l)

1. XeO64- oxidises F-

2. The oxidation number of F increases from -1  to  zero

3. XeO64- is a stronger oxidizing agent that F-

4. All of the above.

Subtopic:  Introduction to Redox and Oxidation Number | Oxidizing & Reducing Agents |
 86%
From NCERT
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The element that does not show a disproportionation tendency is/are:

1. Cl

2. Br

3. F

4. I

Subtopic:  Oxidizing & Reducing Agents |
 83%
From NCERT
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Oxidation number of oxygen in potassium super oxide (KO2) is-

1. – 2

2. – 1

3. – 1/2

4. – 1/4

Subtopic:  Oxidizing & Reducing Agents |
 83%
From NCERT
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What is the alteration in the oxidation state of carbon in the given reaction?

\(\mathrm{{CH_4}_{(g)} + 4{Cl_2}_{(g)} \rightarrow {CCl_4}_{(l)} + 4 HCl_{(g)}}\)

1. 0 to +4

2. –4 to +4

3. 0 to –4

4. +4 to +4

Subtopic:  Oxidizing & Reducing Agents |
 82%
From NCERT
NEET - 2020
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The oxidizing agent and reducing agent in the given reaction are :

3N2H4l+4ClO3aq-
6NOg+4Claq-+6H2Ol

1. Oxidising agent = N2H4; Reducing agent = ClO3-

2. Oxidising agent = ClO3-; Reducing agent = N2H4

3. Oxidising agent = N2H4 ; Reducing agent = N2H4

4. Oxidising agent = ClO3- ; Reducing agent = ClO3-

Subtopic:  Oxidizing & Reducing Agents |
 83%
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The oxidising agent and reducing agent in the given reaction are :

Cl2O7g+4H2O2aq+2OHaq-
2ClO2aq-+4O2g+5H2Ol

1. Oxidizing agent = H2O2; Reducing agent = Cl2O7

2. Oxidizing agent = Cl2O7; Reducing agent = H2O2

3. Oxidizing agent = H2O2; Reducing agent = H2O2

4. None of the above

Subtopic:  Oxidizing & Reducing Agents |
 80%
From NCERT
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The incorrect statement regarding the rule to find the oxidation number among the following is-

1. The oxidation number of hydrogen is always +1.
2. The algebraic sum of all the oxidation numbers carried by elements in a compound is zero.
3. An element in its free or uncombined state has an oxidation number of zero.
4. Generally, in all its compounds, the oxidation number of fluorine is -1.

Subtopic:  Oxidizing & Reducing Agents |
 77%
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The change in oxidation number of chlorine when Cl2 gas reacts with hot and concentrated sodium hydroxide solution is:

1. Zero to +1 and Zero to –5

2. Zero to –1 and Zero to +5

3. Zero to –1 and Zero to +3

4. Zero to +1 and Zero to –3

Subtopic:  Oxidizing & Reducing Agents |
 69%
From NCERT
AIPMT - 2012
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