56. A gas that can not be collected over water is

1. 1. N₂

   
   
   

   2. O₂

   
   
   

   3. SO₂

   
   
   

   4. PH₃

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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57. SO₂ is not a

1. 1. Basic oxide

   
   
   

   2. Bleaching agent

   
   
   

   3. Disinfectant

   
   
   

   4. Reducing agent

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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58. Bleaching action of SO₂ is due to

1. 1. Oxidation

   
   
   

   2. Reduction

   
   
   

   3. Hydrolysis

   
   
   

   4. Electrolysis

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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59. Which is the catalyst used in manufacture of sulphuric acid by contact process ?

1. 1. Fe

   
   
   

   2. NO

   
   
   

   3. N₂O

   
   
   

   4. V₂O₅

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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60. Oxygen molecule shows

1. 1. Diamagnetism

   
   
   

   2. Paramagnetism

   
   
   

   3. Feromagnetism

   
   
   

   4. Ferrimagnetism

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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