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Class 9 Chemistry · Chapter 8 · Test 2

Periods, Groups and Blocks

25 MCQs covering periods, groups, shells, s-block, p-block, d-block, f-block, lanthanides, actinides, and the classification of elements in the modern periodic table.

MCQs

25 questions · 20 min · 25 marks

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Sample questions

The first 5 of 25. Try each one, then tap to see the answer.

  1. Question 1

    How many periods are present in the modern periodic table?

    • A5
    • B6
    • C7
    • D8
    Show answer

    Answer: C

    The modern periodic table contains seven periods.

  2. Question 2

    How many groups are present in the modern periodic table?

    • A16
    • B17
    • C18
    • D20
    Show answer

    Answer: C

    There are eighteen vertical groups in the modern periodic table.

  3. Question 3

    What are the horizontal rows of the periodic table called?

    • AGroups
    • BPeriods
    • CBlocks
    • DFamilies
    Show answer

    Answer: B

    Horizontal rows are called periods.

  4. Question 4

    What are the vertical columns of the periodic table called?

    • APeriods
    • BGroups
    • CShells
    • DSeries
    Show answer

    Answer: B

    Vertical columns are called groups.

  5. Question 5

    What determines the period number of an element?

    • ANumber of occupied electron shells
    • BNumber of neutrons
    • CNumber of protons only
    • DNumber of isotopes
    Show answer

    Answer: A

    The period number corresponds to the number of occupied electron shells.

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