The correct order of reducing power of halide ions is:

1. Cl- > Br- > I- > F-

2. Cl- >  I- > Br- > F-

3.  Br> Cl- > I- > F-

4.  I- > Br> Cl- > F-

Subtopic:  Oxidizing & Reducing Agents |
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When H2SO3 is converted into H2SO4 the change in the oxidation state of sulfur is from:

1. 0 to +2

2. +2 to +4

3. +4 to +2

4. +4 to +6

Subtopic:  Oxidizing & Reducing Agents |
 89%
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The reaction during which nitrogen gets oxidised is-

1. NH4+ N2

2. NO3- NO

3. NO2 NO2-

4. NO3-NH4+ 

Subtopic:  Oxidizing & Reducing Agents |
 76%
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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 |
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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 |
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