16. The matel reacts with an acid to give

1. 1. N₂

   
   
   

   2. O₂

   
   
   

   3. CI₂

   
   
   

   4. H₂

   
   
   

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   NA

   Correct Option: D

   NA

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17. The pH scale had been given by

1. 1. Arrhenius

   
   
   

   2. Bronsted

   
   
   

   3. Sornsen

   
   
   

   4. Lewis

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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18. Which one is tribasic aicd

1. 1. HCI

   
   
   

   2. H₃PO₄

   
   
   

   3. H₃BO₃

   
   
   

   4. H₂SO₄

   
   
   

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   NA

   Correct Option: B

   NA

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19. The increasing order of acid strenght of HCI, HI, HBr, HF is

1. 1. HCI < HI < HBr < HF

   
   
   

   2. HI < HCI < HBr < HF

   
   
   

   3. HF < HCI < HBr < HI

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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20. The acid used in eye wash is

1. 1. oxalic acid

   
   
   

   2. nitric acid

   
   
   

   3. boric acid

   
   
   

   4. none

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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