Chemistry Questions Answers

  • 8. How many different oxides are formed by nitrogen ?

    1. two
    2. three
    3. four
    4. five
    Answer :

    Option A

  • 9. Bleaching action of chlorine is by

    1. decomposition
    2. hydrolysis
    3. reduction
    4. oxidation
    Answer :

    Option A

  • 10. Chemical used in photography is

    1. sodium sulphate
    2. sodium sulphite
    3. sodium thiosulphate
    4. sodium oxalate
    Answer :

    Option C

  • 11. Acids taste

    1. Sour
    2. Sweet
    3. May be both
    4. None of both
    Answer :

    Option A

  • 12. Acid rain is due to air pollution by ?

    1. Carbon dioxide
    2. Carbon monoxide
    3. Methane
    4. Nitrous oxide and Sulphur dioxide
    Answer :

    Option D

  • 13. What is the chemical name of table salt ?

    1. Sodium nitrate
    2. Ammonium chloride
    3. Sodium chloride
    4. Calcium chloride
    Answer :

    Option C

  • 14. The isotope atoms differ in ?

    1. number of protons
    2. atomic number
    3. number of electrons
    4. atomic weight
    Answer :

    Option C

    Explanation:

    Important to note that isotope atoms have same atomic number.

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