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Class 9 Chemistry · Chapter 3 · Test 10

Chemical Bonding Full Test

mixed-difficulty MCQs covering the complete chapter, including ionic, covalent, coordinate covalent and metallic bonding, molecular structures, polarity, intermolecular forces, properties and applications.

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

    What is the main reason atoms form chemical bonds?

    • ATo achieve a more stable electronic arrangement
    • BTo increase their atomic number
    • CTo become heavier
    • DTo eliminate their nuclei
    Show answer

    Answer: A

    Atoms form bonds to reach lower-energy and generally more stable electronic arrangements.

  2. Question 2

    Which particles are formed when magnesium reacts with oxygen?

    • AMg2+ and O2-
    • BMg+ and O-
    • CMg- and O+
    • DMg2- and O2+
    Show answer

    Answer: A

    Magnesium loses two electrons and oxygen gains two electrons.

  3. Question 3

    What is the correct formula of calcium fluoride?

    • ACaF2
    • BCa2F
    • CCaF
    • DCa2F2
    Show answer

    Answer: A

    One Ca2+ ion balances the charge of two F- ions.

  4. Question 4

    What is the main force holding an ionic crystal together?

    • AElectrostatic attraction between oppositely charged ions
    • BSharing of electron pairs
    • CAttraction between neutral molecules
    • DHydrogen bonding
    Show answer

    Answer: A

    Oppositely charged ions attract one another in an ionic lattice.

  5. Question 5

    How many electron pairs are shared in a single covalent bond?

    • AOne
    • BTwo
    • CThree
    • DFour
    Show answer

    Answer: A

    A single covalent bond consists of one shared electron pair.

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