26. In (Ni [CO₄)] the oxidation state of Ni is

1. 1. 4

   
   
   

   2. Zero

   
   
   

   3. 2

   
   
   

   4. 8

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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27. Select the compound in which chlorine shows oxidation state + 7 ?

1. 1. HCIO₄

   
   
   

   2. HCIO₃

   
   
   

   3. HCIO₂

   
   
   

   4. HCIO

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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28. The oxidation of two Cl atoms in bleaching powder Ca(OCI) CI is

1. 1. -1, -1

   
   
   

   2. +1, -1

   
   
   

   3. +1, +1

   
   
   

   4. 0, -1

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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29. The conversion of sugar C₁₂H₂₂O₁₁ → CO₂ is

1. 1. Oxidation state of phosphorus varies from

   
   
   

   2. -1 to +1

   
   
   

   3. -3 to +3

   
   
   

   4. -3 to 5

   
   
   

   5. -5 to +1

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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30. Oxidation number of fluorine in F₂O is

1. 1. +1

   
   
   

   2. +2

   
   
   

   3. -1

   
   
   

   4. -2

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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