Q. No.Match the redox reactions in List-I with their corresponding type of redox reaction in List-II.
Choose the correct answer from the options given below :
1. A-II, B-III, C-IV, D-I
2. A-II, B-III, C-I, D-IV
3. A-III, B-IV, C-I, D-II
4. A-IV, B-I, C-II, D-III
| List-I (Redox Reaction) |
List-II (Type of Redox Reaction) |
||
| (A) | \(\mathrm{CH}_{4(\mathrm{~g})}+2 \mathrm{O}_{2(\mathrm{~g})}\) \(\xrightarrow{\Delta} \mathrm{CO}_{2(\mathrm{~g})}+\) \(2 \mathrm{H}_2 \mathrm{O}_{(1)}\) | (I) | Disproportionation reaction |
| (B) | \(2 \mathrm{NaH}_{(\mathrm{s})} \xrightarrow{\Delta}\) \(2 \mathrm{Na}_{(\mathrm{s})}+\mathrm{H}_{2(\mathrm{~g})}\) | (II) | Combination reaction |
| (C) | \(\mathrm{V}_2 \mathrm{O}_{5(\mathrm{~s})}+5 \mathrm{Ca}_{(\mathrm{s})}\) \(\xrightarrow{\Delta} 2 \mathrm{~V}_{(\mathrm{s})} ~+\) \(5 \mathrm{CaO}_{(\mathrm{s}}\) | (III) | Decomposition reaction |
| (D) | \(2 \mathrm{H}_2 \mathrm{O}_{2(\mathrm{aq})} \xrightarrow{\Delta}\) \(2 \mathrm{H}_2 \mathrm{O}_{(1)}+\mathrm{O}_{2(\mathrm{~g})}\) | (IV) | Displacement reaction |
Choose the correct answer from the options given below :
1. A-II, B-III, C-IV, D-I
2. A-II, B-III, C-I, D-IV
3. A-III, B-IV, C-I, D-II
4. A-IV, B-I, C-II, D-III
Subtopic: Introduction to Redox and Oxidation Number |
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In which of the following compound \(Mn\) will have highest oxidation state?
1. \(\mathrm{MnO}_4^{-}\)
2. \(\mathrm{MnO}_2\)
3. \(\mathrm{MnO}_4^{2-}\)
4. \(\mathrm{Mn}_2 \mathrm{O}_3\)
1. \(\mathrm{MnO}_4^{-}\)
2. \(\mathrm{MnO}_2\)
3. \(\mathrm{MnO}_4^{2-}\)
4. \(\mathrm{Mn}_2 \mathrm{O}_3\)
Subtopic: Introduction to Redox and Oxidation Number |
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How many of the following show disproportionation reaction?
\(\mathrm{H}_2 \mathrm{O}_2, \mathrm{Ag}, \mathrm{Cu}^{+}, \mathrm{K}^{+}, \mathrm{F}_2, \mathrm{Cl}_2, \mathrm{ClO}_3^{-}\)
1. Four (4)
2. One (1)
3. Six (6)
4. Two (2)
\(\mathrm{H}_2 \mathrm{O}_2, \mathrm{Ag}, \mathrm{Cu}^{+}, \mathrm{K}^{+}, \mathrm{F}_2, \mathrm{Cl}_2, \mathrm{ClO}_3^{-}\)
1. Four (4)
2. One (1)
3. Six (6)
4. Two (2)
Subtopic: Introduction to Redox and Oxidation Number |
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Which of the following reactions is not an example of a disproportionation reaction?
| 1. | \(2 \mathrm{H}_2 \mathrm{O}_2 \rightarrow 2 \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2 \) |
| 2. | \(2 \mathrm{NO}_2+\mathrm{H}_2 \mathrm{O} \rightarrow \mathrm{HNO}_3+\mathrm{HNO}_2 \) |
| 3. | \(\mathrm{MnO}_4^{-}+4 \mathrm{H}^{+}+3 \mathrm{e}^{-} \rightarrow \mathrm{MnO}_2+2 \mathrm{H}_2 \mathrm{O} \) |
| 4. | \(3 \mathrm{MnO}_4^{2-}+4 \mathrm{H}^{+} \rightarrow 2 \mathrm{MnO}_4^{-}+\mathrm{MnO}_2+2 \mathrm{H}_2 \mathrm{O}\) |
Subtopic: Introduction to Redox and Oxidation Number |
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Which of the following oxoacids of sulphur contains ‘‘S’’ in two different oxidation states?
1. \(\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_3\)
2. \(\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_6\)
3. \(\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_7\)
4. \(\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_8\)
1. \(\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_3\)
2. \(\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_6\)
3. \(\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_7\)
4. \(\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_8\)
Subtopic: Introduction to Redox and Oxidation Number |
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The species given below that does not show a disproportionation reaction is:
| 1. | \(\text{BrO}^-\) | 2. | \(\text{BrO}^-_4\) |
| 3. | \(\text{BrO}^-_3\) | 4. | \(\text{BrO}^-_2\) |
Subtopic: Introduction to Redox and Oxidation Number |
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The oxidation states of iron atoms in compounds (A), (B) and (C), respectively, are x, y and z. The sum of x, y and z is________.
Na4[Fe(CN)5NOS] Na4[FeO4] [Fe2(CO)9]
(A) (B) (C)
1. 4
2. 5
3. 6
4. 7
Subtopic: Introduction to Redox and Oxidation Number |
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The oxidation states of transition metal atoms in K2Cr2O7, KMnO4 and K2FeO4, respectively, are x, y and z.
The sum of x, y and z is:
1. 16
2. 12
3. 19
4. 22
Subtopic: Introduction to Redox and Oxidation Number |
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Oxidation number of potassium in \(\mathrm{K}_2 \mathrm{O} , \mathrm{K}_2 \mathrm{O}_2\) and \(\mathrm{KO}_2\), respectively, is:
1. +2,+1 and +\(\frac{1}{2}\)
2. +1,+4 and +2
3. +1,+1 and +1
4. +1,+2 and +4
1. +2,+1 and +\(\frac{1}{2}\)
2. +1,+4 and +2
3. +1,+1 and +1
4. +1,+2 and +4
Subtopic: Introduction to Redox and Oxidation Number |
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Which of the following reactions is an example of a redox reaction?
1. \(XeF_6+H_2O~\longrightarrow~XeOF_4+2HF\)
2. \(XeF_6+2H_2O~\longrightarrow~XeO_2F_2+4HF\)
3. \(XeF_4+O_2F_2~\longrightarrow~XeF_6+O_2\)
4. \(XeF_2+PF_5~\longrightarrow~[XeF]^{+1}+PF_6~^-\)
Subtopic: Introduction to Redox and Oxidation Number |
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