26. pH value of neutral solution is

1. 1. 8

   
   
   

   2. 5

   
   
   

   3. 7

   
   
   

   4. 13

   
   
   

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   NA

   Correct Option: C

   NA

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27. pH value of acidic solution is

1. 1. <7

   
   
   

   2. >7

   
   
   

   3. 7

   
   
   

   4. None

   
   
   

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   NA

   Correct Option: A

   NA

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28. The element common to all the acids is known as

1. 1. Oxygen

   
   
   

   2. Hydrogen

   
   
   

   3. Carbon

   
   
   

   4. None of these

   
   
   

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   NA

   Correct Option: B

   NA

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29. Which is not a Lewis acid ?

1. 1. BF₃

   
   
   

   2. AICI₃

   
   
   

   3. FeCI₃

   
   
   

   4. NH₃

   
   
   

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   NA

   Correct Option: D

   NA

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30. Which one of the following is the strongest acid ?

1. 1. HBr

   
   
   

   2. HF

   
   
   

   3. HCIO

   
   
   

   4. HCIO₄

   
   
   

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   NA

   Correct Option: D

   NA

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