Chemical Bonding Exam: Quiz!

29 Questions | Total Attempts: 149

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Chemical Bonding Exam: Quiz! - Quiz

Why do you think chemical bonds are important? Chemical bonds are imperative because they change the property of the substances that go into the reaction; they also store or release energy. Building and breaking these bonds is all a part of the energy cycle, as it is one of the ways we have to create energy. This quiz will help you to understand chemical bonding better. Good luck with the quiz.


Questions and Answers
  • 1. 
    When two atoms combine to form a molecules:
    • A. 

      Energy is released

    • B. 

      Energy is absorbed

    • C. 

      Energy is neither released nor absorbed

    • D. 

      Energy may either released or absorbed

  • 2. 
    The combination of atoms occur because they want :
    • A. 

      To decrease number of electrons in the outer most orbit

    • B. 

      To attain an inert gas configuration

    • C. 

      To increase number of electrons in the outer most orbit

    • D. 

      To attain 18 electrons in the outermost orbit

  • 3. 
    Which condition favours the bond formation:
    • A. 

      Maximum attraction and maximum potential  energy

    • B. 

      Minimum attraction and minimum potential energy

    • C. 

      Minimum potential energy and maximum attraction

    • D. 

      None of the above

  • 4. 
    An electrovalent bond or ionic bond is formed between:
    • A. 

      Two electronegative atoms

    • B. 

      Two metals

    • C. 

      Electropositive and electronegative atoms

    • D. 

      Two electropositive atoms

  • 5. 
    The most favorable conditions for electrovalent bonding are:
    • A. 

      Low ionisation potential of one atom and                  high electron affinity of the other atom

    • B. 

      High electron affinity and high ionisation                 potential of both the atoms

    • C. 

      Low electron affinity and low ionisation                 potential of both the atoms

    • D. 

      High ionisation potential of one atom and                 low electrons afinity of the other atom

  • 6. 
    The electronegativity of cesium is 0.7 and fluorine is 4.0. The bond formed between the two is:
    • A. 

      Covalent

    • B. 

      Electrovalent/ionic

    • C. 

      Coordinate

    • D. 

      Metallic

  • 7. 
    Electrovalent bond or ionic bond is formed by:
    • A. 

      Sharing of electrons

    • B. 

      Donation of electrons

    • C. 

      Transfer of electrons

    • D. 

      None of these

  • 8. 
    Element X is strongly electropositive and Y is strongly electronegative. Both are univalent. The compound formed would be:
    • A. 

      X+ Y–

    • B. 

      X – Y

    • C. 

      X– Y+ 

    • D. 

      X ®Y

  • 9. 
    Element A has 3 electrons in the outermost orbit and element B has 6 electrons in the outermost orbit. The formula of the compound formed between A and B would be:
    • A. 

      A2B3

    • B. 

      A2B6

    • C. 

      A2B

    • D. 

      A3B2

  • 10. 
    Ionic compounds in general possess both:
    • A. 

      High melting points and non-directional                 bonds

    • B. 

                      High melting points and low boiling points

    • C. 

      Directional bonds and low boiling points

    • D. 

      High solubilities in polar and non-polar                 solvents

  • 11. 
    A covalent bond is possible between:
    • A. 

      Similar atoms

    • B. 

      Dissimilar atoms

    • C. 

      Similar and dissimilar atoms

    • D. 

      Similar molecules

  • 12. 
    Which of the following statement is not true about covalent compounds?
    • A. 

      They may exhibit space isomerism

    • B. 

      They have low melting and boiling points

    • C. 

      They show ionic reactions

    • D. 

      They show molecular reactions

  • 13. 
    In a triple bond there is sharing of:
    • A. 

      3 electrons

    • B. 

      4 electrons

    • C. 

      Several electrons

    • D. 

      6 electrons

  • 14. 
    Which of the following bonds will have a directional character?
    • A. 

      Ionic bond

    • B. 

      Metalic bond

    • C. 

      Covalent bond

    • D. 

      Both covalent & metallic

  • 15. 
    The type of bond formed between two electronegative atoms would be:
    • A. 

      Covalent

    • B. 

      Ionic

    • C. 

      Metallic

    • D. 

      All the above

  • 16. 
    In Co-ordinate bond, the acceptor atoms must essentially contain in its valency shell an orbital:
    • A. 

      With paired electron

    • B. 

      With single electron

    • C. 

      With no electron

    • D. 

      With three electron

  • 17. 
    Correct statement regarding this reaction BF3 + NH3 ¾® [F3B ¬ NH3]
    • A. 

      Hybridisation of N is changed

    • B. 

      Hybridisation of B is changed

    • C. 

      NH3 act as a lewis base

    • D. 

      (B) & (C) both

  • 18. 
    The correct statement for the reaction    NH3 + H+ ® NH4
    • A. 

      Hybridisation state is changed

    • B. 

      Bond angle increases

    • C. 

      NH3 act as a Lewis acid

    • D. 

      Regular geometry is changed

  • 19. 
    In which compound coordinate bond is present:
    • A. 

      NH3

    • B. 

      NH4OH

    • C. 

      H2O

    • D. 

      HCl

  • 20. 
    A sigma bond is formed by the overlapping of :
    • A. 

      S-s orbital alone

    • B. 

      S and p orbitals alone

    • C. 

      S-s, s-p or p-p orbitals along internuclear   axis

    • D. 

      P-p orbital along the sides

  • 21. 
    Which overlapping is involved in HCl molecule:
    • A. 

      S-s overlap

    • B. 

      P-p overlap

    • C. 

      S-d overlap

    • D. 

      S-p overlap  

  • 22. 
    Which of the following compound is formed in the second excitation state of sulphur atom?
    • A. 

      SF4

    • B. 

      SF6

    • C. 

      SF2

    • D. 

      None

  • 23. 
    The strength of bonds by 2s – 2s, 2p – 2p, and 2p – 2s overlapping has the order:
    • A. 

      S – s > p – p > s – p

    • B. 

      S – s > s – p > p – p

    • C. 

      P – p > s – p > s – s

    • D. 

      P – p > s – s > s – p

  • 24. 
    Which is not characteristic of p-bond:
    • A. 

      P-bond is formed when a sigma bond                 already formed

    • B. 

      P-bond are formed from hybrid orbitals

    • C. 

      P- bond may be formed by the overlapping                 of p-orbitals

    • D. 

      P- bond results from lateral overlap of                 atomic orbital

  • 25. 
    Which of the set of species have same hybridisation state but different shapes:
    • A. 

      , NO2,

    • B. 

      , SF4, XeF4 

    • C. 

      , H3O+, OF2

    • D. 

       

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