11. The catalyst used in the manufacture of sulphuric acid by contact process is

1. 1. AI₂O₃

   
   
   

   2. Cr₂O₃

   
   
   

   3. V₂O₅

   
   
   

   4. MnO₂

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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12. Glucose or fructose is converted into C₂H₅OH in the presence of

1. 1. invertase

   
   
   

   2. diastase

   
   
   

   3. maltase

   
   
   

   4. zymase

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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13. Which one the following reaction is an example for homogeneous catalysis ?

1. 1. 2H₂O (I) ^MnO₂(s)→ 2H₂O (s) + O₂ (g)

   
   
   

   2. 2S₂O (g) + O₂ (2)^{V₂O₅ (s)}→ 2SO₃ (g)

   
   
   

   3. 2CO (g) + O (g)^NO₂(g)→ 2CO₂ (g)

   
   
   

   4. H₂ (g) + C₂H₄ (g)^{Ni (5)} → C₂H₂ (g)

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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14. The substance which decreases the rate of a chemical reaction is called

1. 1. Inhibitor

   
   
   

   2. Poison

   
   
   

   3. Moderator

   
   
   

   4. Promotor

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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15. Substance which alter the velocity of reaction themselves remaining chemically and quantitatively unchanged after reaction are known as

1. 1. Indicators

   
   
   

   2. Catalysts

   
   
   

   3. Adsorbates

   
   
   

   4. Surfactants

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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