Science Quiz

17 Questions | Total Attempts: 48

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8th Grade Science Quizzes & Trivia

This is a quiz for cbse 8th std board.


Questions and Answers
  • 1. 
    1) What is atomicity?
    • A. 

      It is the number of atoms present in a molecule of an element.

    • B. 

      It is the number of molecules in an atom.

    • C. 

      It is the number of protons in an atom

    • D. 

      It is the number of atoms in an atom

  • 2. 
    Molecules like helium, argon and neon contains only one atom. They are
    • A. 

      Mono atomic molecules

    • B. 

      Poly atomic molecules

    • C. 

      Di-atomic molecules

    • D. 

      Tri-atomic molecules

  • 3. 
    If the molecule consists of atoms of same type it is called molecule of an element
    • A. 

      True

    • B. 

      False

  • 4. 
    It the molecule contains atoms of two or more elements it is called a molecule of an compoud.
    • A. 

      True

    • B. 

      False

  • 5. 
    If a molecule consists of only one atom it is called poly atomic molecule.
    • A. 

      False

    • B. 

      True

  • 6. 
     Molecules like hydrogen,oxygen and nitrogen contains only two atoms. They are
    • A. 

      Mono atomic molecules

    • B. 

      Poly atomic molecules

    • C. 

      Di-atomic molecules

    • D. 

      Tri-atomic molecules

  • 7. 
    Molecules like Ozone contains three atoms. They are
    • A. 

      Mono atomic molecules

    • B. 

      Poly atomic molecules

    • C. 

      Di-atomic molecules

    • D. 

      Tri-atomic molecules

  • 8. 
    Molecules like phosporous contains four atoms. They are
    • A. 

      Mono atomic molecules

    • B. 

      Poly atomic molecules

    • C. 

      Di-atomic molecules

    • D. 

      Tri-atomic molecules

  • 9. 
     The inner most shell of an atom is called valence shell.
    • A. 

      True

    • B. 

      False

  • 10. 
    The electrons in the inner most shell is called valence shell
    • A. 

      True

    • B. 

      False

  • 11. 
    The number of protons and electorns are not same in an atom
    • A. 

      True

    • B. 

      False

  • 12. 
     The number of protons is equal to the number of electrons in an atom
    • A. 

      True

    • B. 

      False

  • 13. 
    The atomic number is the number of protons in an atoms.
    • A. 

      True

    • B. 

      False

  • 14. 
    The atomic number is not the number of protons or electrons in an atom
    • A. 

      True

    • B. 

      False

  • 15. 
    THE MASS NUMBER IS THE NUMBER OF PROTONS IN AN ATOM.
    • A. 

      True

    • B. 

      False

  • 16. 
    THE MASS NUMBER IS THE NUMBER OF electrons IN AN ATOM (F)
    • A. 

      True

    • B. 

      False

  • 17. 
    THE MASS NUMBER IS THE NUMBER OF PROTONS and neutrons IN AN ATOM
    • A. 

      True

    • B. 

      False