(a) H2O2 + O3 → H2O + 2O2
(b) H2O2 + Ag2O → 2Ag + H2O + O2
The role of hydrogen peroxide in the above reactions is respectively:
1. | Oxidizing in (a) and reducing in (b) |
2. | Reducing in (a) and oxidizing in (b) |
3. | Reducing in (a) and (b) |
4. | Oxidizing in (a) and (b) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe highest oxidation number of nitrogen among the following compounds is:
1. | 2. | ||
3. | 4. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number?Redox Reactions
1. S
2. H
3. Cl
4. C
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyStandard reduction potentials of the half-reactions are given below:
The strongest oxidizing and reducing agents, respectively, are:
1. and
2. and
3. and
4. and
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA solution contains Fe2+, Fe3+ and I– ions. This solution was treated with iodine at 35°C. E° for Fe3+/Fe2+ is +0.77 V and E° for I2/2I– = 0.536 V.
The favourable redox reaction is:
1. Fe2+ will be oxidized to Fe3+.
2. I2 will be reduced to I–.
3. There will be no redox reaction.
4. I– will be oxidized to I2.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOxidation numbers of P in , of S in and that of Cr in are respectively:
1. +5, +6 and +6
2. +3, +6 and +5
3. +5, +3 and +6
4. -3, +6 and +6
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
The strongest oxidizing agent in the above equation is:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyNumber of moles of \(MnO^-_4\) required to oxidise one mole of ferrous oxalate completely in an acidic medium will be:
1. | 0.6 mole | 2. | 0.4 mole |
3. | 7.5 moles | 4. | 0.2 mole |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe number of moles of KMnO4 that will be needed to react with one mole of sulphite ion in an acidic solution is:
1. | \(3 \over 5\) | 2. | \(4 \over 5\) |
3. | \(2 \over 5\) | 4. | 1 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology