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Chemistry - section - 2
  1. The components of water can be separated by

    2. A.

     Physical methods
    B.

     Chemical methods
    C.

     Both A and B
    D.

     They can not be separated

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  2. Which of the following is not a chemical reaction?

    3. A.

     Burning of paper
    B.

     Digestion of food
    C.

     Conversion of water into steam
    D.

     Burning of coal

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  3. Chemical formula of washing soda is

    4. A.

     Na2SO4.10H2O
    B.

     NaHCO3
    C.

     Na2CO3.10H2O
    D.

     Ca(OH)2

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  4. What is the chemical name for ‘Baking Soda’ ?

    5. A.

     Sodium carbonate
    B.

     Sodium bicarbonate
    C.

     Sodium nitrite
    D.

     Sodium nitrate

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  5. The chemical name of ‘Common salt’ is

    6. A.

     Sodium chloride
    B.

     Sodium nitrate
    C.

     Ammonium chloride
    D.

     Calcium chloride

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  6. Rock salt is a mineral containing

    7. A.

     Potassium
    B.

     Magnesium
    C.

     Sodium
    D.

     Iron

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  7. Baking soda is :

    8. A.

     Potassium carbonate
    B.

     Sodium hydroxide
    C.

     Sodium carbonate
    D.

     Sodium bicarbonate

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  8. Sodium Carbonate is commonly known as

    9. A.

     Baking Soda
    B.

     Washing Soda
    C.

     Caustic Soda
    D.

     Caustic Potash

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  9. Brine refers to :

    10. A.

     Salt water
    B.

     Sweet water
    C.

     Pure water
    D.

     Starch water

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  10. The chemical name of baking soda is

    11. A.

     Sodium carbonate
    B.

     Sodium bicarbonate
    C.

     Sodium chloride
    D.

     Sodium nitrate

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