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#1 | Oxidation Number
(Chemistry) > Redox Reactions

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Related Practice Questions :

Redox reaction among the following is -

1. NaCl + KNO3 NaNO3 + KCl

2. CaC2O4 + 2HCl CaCl2 + H2C2O4

3. Mg(OH)2 + 2NH4Cl MgCl2 + 2NH4OH

4. Zn + 2AgCN 2Ag + Zn(CN)2

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Which metal exhibits more than one oxidation states?

1. Na

2. Mg

3. Al

4. Fe

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In the aluminothermic process, aluminium acts as:

1. an oxidising agent

2. a flux

3. a reducing agent

4. a solder

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Disproportionation reaction(s) among the following is/are represented by -

1. Cl2 + 2OH- ClO- + Cl- + H2O

2. Cu2O(s) + 2H+ Cu2+ + Cu(s) + H2O

3. 2HCuCl2 waterDilution with Cu + Cu2+ + 4 Cl- +  2H+

4. All of the above

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In a redox change, the oxidant K2Cr2O7 is always reduced to:

1. Cr5+

2. Cr4+

3. Cr3+

4. Cr2+

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