10th Class Science Sample Paper Science Olympiad Model Test Paper-1

  • question_answer
    Which one of the following statements is correct?
    (i) Modern periodic table is based on atomic masses of elements.
    (ii) 6th period of the modern periodic table contains 32 elements.
    (iii) The valence cells of all the noble gases are completely filled with electrons.
    (iv) The elements in a group of a modern periodic table have consecutive atomic numbers.
    (v) Elements having 3 valance electrons are placed in group 3 in the modern periodic table.

    A) (i) and (ii)          

    B) (ii) and (iii)

    C) (i), (ii) and (iii)

    D) (iii), (iv) and (v)

    E) None of these

    Correct Answer: B


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