16. The hydrolysis of cane sugar is catalysed by

1. 1. H⁺

   
   
   

   2. Mineral acid

   
   
   

   3. Enzymes

   
   
   

   4. All of these

   
   
   

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   NA

   Correct Option: D

   NA

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17. Which of the following types of materials act as effective catalysis ?

1. 1. Alkali metals

   
   
   

   2. Transition metals

   
   
   

   3. Alkaline earth metals

   
   
   

   4. Radioactive metals

   
   
   

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   NA

   Correct Option: B

   NA

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18. An example of an autocatalytic reaction is

1. 1. Hydrogenation of oil

   
   
   

   2. Decomposition of nitroglycerine

   
   
   

   3. Oxidation of Na₂AsO₃ in presence of Na₂SO₃

   
   
   

   4. Thermal decomposition of KCIO₃ is pressure of MnO₂

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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19. Assertion (A) : A chemical reaction becomes faster at higher temperature.
    Reason (R) : At higher temperature, molecular motion becomes more repid
    Codes

1. 1. Both A and R are true and R is the correct explanation of A

   
   
   

   2. Both A and R are true but R is not the correct explanation of A

   
   
   

   3. A is true but R is false

   
   
   

   4. A is false but R is true

   
   
   

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   NA

   Correct Option: A

   NA

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20. Efficiency of the catalysts depends on its

1. 1. molecular state

   
   
   

   2. number of free valencies

   
   
   

   3. physical state

   
   
   

   4. amount used

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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