The reaction during which nitrogen gets oxidised is-

1. NH4+ N2

2. NO3- NO

3. NO2 NO2-

4. NO3-NH4+ 

Subtopic:  Oxidizing & Reducing Agents |
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Reaction that shows hydrogen as an oxidising agent is -

1. With ioding to give hydrogen iodide

2. With lithium to give lithium hydride

3. With nitrogen to give ammonia

4. With sulphur to give hydrogen sulphide

 

Subtopic:  Oxidizing & Reducing Agents |
 69%
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Fluorine is a strong oxidising agent because:

1. it has several isotopes

2. it is very small and has 7 electrons in valency shell

3. its valency is one

4. it is the first member of the halogen series

Subtopic:  Oxidizing & Reducing Agents |
 74%
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The oxidation state of Ni in Ni(CO)4 is:

1. zero

2. +4

3. +8 

4. +2

Subtopic:  Oxidizing & Reducing Agents |
 79%
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Milliequivalents of a solute in a solution can be given by:

1. Mzeq. = M x Vin mL

2. Meq. = N x Vin mL

3. Mzeq. = massEq. mass×1000

4. both 2 and 3

Subtopic:  Oxidizing & Reducing Agents |
 65%
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HBr and HI reduce H2SO4, HCl can reduce KMnO4 and HF can reduce:

1. H2SO4

2. K2Cr2O7

3. KMnO4 

4. none of these

Subtopic:  Oxidizing & Reducing Agents |
 53%
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Sulphurous acid can be used as:

1. Oxidising agent

2. Reducing agent

3. Bleaching agent

4. All of the above

Subtopic:  Oxidizing & Reducing Agents |
 66%
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When SO2 is passed through acidified solution of potassium dichromate, then chromium sulphate is formed. The change in oxidation number of chromium is:

1. +4 to+2 

2. +5 to+3

3. +6 to+3

4. +7 to+2

Subtopic:  Oxidizing & Reducing Agents |
 79%
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The reaction involving the transfer of five electrons is -

1. MnO4-  Mn2+

2. CrO42- Cr3+

3. MnO4-  MnO2

4. Cr2O72- 2Cr3+

Subtopic:  Oxidizing & Reducing Agents |
 83%
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In the reaction;

2Ag + 2H2SOAg2SO4 + 2H2O + SO2, H2SO4 acts as:

1. Oxidizing agent

2. Reducing agent

3. Dehydrating agent

4. None of the above

Subtopic:  Balancing of Equations |
 74%
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