11. By what factor is a solution with pH = 2 more acidic than one with pH = 6 ?

1. 1. 4

   
   
   

   2. 12

   
   
   

   3. 400

   
   
   

   4. 10⁴

   
   
   

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   NA

   Correct Option: D

   NA

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12. According to Arrhenius theory of an acid and base, an acid is a substance which given ...........ions in water.

1. 1. H⁺ ions

   
   
   

   2. OH^-

   
   
   

   3. Both

   
   
   

   4. None

   
   
   

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   NA

   Correct Option: A

   NA

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13. An acid is a substance which

1. 1. donates a proton

   
   
   

   2. accepts an electron

   
   
   

   3. give H⁺ in water

   
   
   

   4. all of these

   
   
   

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   NA

   Correct Option: D

   NA

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14. Trataric acid is obtained from

1. 1. apples

   
   
   

   2. citrous fruit

   
   
   

   3. grapes

   
   
   

   4. tomato

   
   
   

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   NA

   Correct Option: C

   NA

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15. Blue litmus paper is converted into red in solution of

1. 1. acid

   
   
   

   2. base

   
   
   

   3. alkali

   
   
   

   4. salt

   
   
   

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   NA

   Correct Option: A

   NA

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