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  1. When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is

  2. A.

     Hydrogen

    B.

     Oxygen

    C.

     Carbon dioxide

    D.

     All of them

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    Answer : Option C

    Explanation :

    When baking soda and lemon juice are added together, the reaction of the two is an acid-based reaction because it involves an acid (citric acid in the lemon juice) reacting with a base (sodium bicarbonate, more commonly known as baking soda). Carbon dioxide, a gas, is produced by the reaction.


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