211. Bleaching action of SO₂ is due to its

1. 1. Oxidizing action

   
   
   

   2. Reducing action

   
   
   

   3. Ability to hydrolyse

   
   
   

   4. Acidic nature

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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212. Iodine reacts with hot conc. NaOH to give

1. 1. NaI + NalO₃ + H₂O

   
   
   

   2. Nal + HIO₃ + H₂O

   
   
   

   3. Nal + NalO + O₂

   
   
   

   4. Nal + HIO + O₂

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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213. Sapphire is a mineral of

1. 1. Cu

   
   
   

   2. Ca

   
   
   

   3. Fe

   
   
   

   4. Al

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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214. Which one is called inorganic benzene (borazole) ?

1. 1. B₆H₆

   
   
   

   2. N₆H₆

   
   
   

   3. C₆H₆

   
   
   

   4. B₃N₃H₆

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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215. Red lead is

1. 1. PbO

   
   
   

   2. Pb₂O

   
   
   

   3. Pb₂O₃

   
   
   

   4. Pb₃O₄

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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