Quiz  /  Covalent Bonding Class 11 MCQ Questions With Answers

  • 1. 
    Explain why methane has a low melting point

  • It is a simple molecular substance with weak forces between the molecules (which are easy to break)
  • It is a simple molecular substance with strong forces between the molecules (which are difficult to break)

  • 2. 
    What type of substance are methane and water?

  • Giant covalent molecules
  • Simple covalent molecules
  • Giant ionic lattice
  • Metallic structure

  • 3. 
    Explain why chlorine and fluorine form covalent bonds

  • They are both metals
  • They are both non-metals
  • One is a metal and one is a non-metal
  • They are both semi-metals

  • 4. 
    What is the name given to the structure of diamond, graphite and silicon dioxide?

  • Mega covalent structure
  • Mega ionic lattice
  • Giant covalent
  • Giant ionic

  • 5. 
    What are intermolecular forces?

  • Strong forces between molecules which keep them apart
  • Weak forces between molecules which keep them apart
  • Strong forces between molecules which hold them together
  • Weak forces between molecules which hold them together

  • 6. 
    Explain why graphite conducts electricity

  • It is made of metal ions
  • It has delocalised electrons between the layers that can move through the graphite
  • Each carbon atom has 4 electrons on its outer shell, it uses all 4 electrons to conduct electricity
  • The ions are free to move

  • 7. 
    Explain why most giant covalent substances do not conduct electricity.

  • There are no electrons/ions/charged particles that are free to move
  • The electrons/ions/charged particles that are free to move
  • The electrons/ions/charged particles cannot carry the charge
  • There are not enough electrons/ions/charged particles to carry the charge through the structure

  • 8. 
    Explain why graphite can act as a lubricant

  • The carbon atoms in graphite cause very little friction.
  • The carbon atoms are in a liquid state
  • Weak forces between carbon atoms are free to slide over each other
  • Weak forces between layers which are free to slide over each other

  • 9. 
    Complete the sentence: In covalent bonds, electrons are _______________________

  • Lost
  • Gained
  • Halved
  • Shared

  • 10. 
    What is graphene?

  • A sphere shaped structure of carbon atoms
  • Several layers of graphite
  • One layer of graphite
  • A tube shaped layer of carbon atoms

  • 11. 
    How many electrons should Carbon have around its Lewis dot structure?

  • 1
  • 3
  • 4
  • 5

  • 12. 
    When you have Li-O, what is the polarity?

  • nonpolar
  • polar
  • ionic
  • molecular

  • 13. 
    Write the formula for: selenium dihydride

  • H2O
  • (H3C)3 Si
  • Hâ‚‚Se
  • None of these

  • 14. 
    Explain why diamond has a high melting point

  • Giant structure, strong covalent bonds between the atoms, requires a lot of energy to break
  • Giant structure, weak covalent bonds between the atoms, requires little energy to break
  • Mega structure, strong covalent bonds between the atoms, requires a lot of energy to break
  • Mega structure, weak covalent bonds between the atoms, requires little energy to break

  • 15. 
    Are the atoms more stable when they are bonded together or when they are apart?

  • Bonded Together
  • Apart

  • 16. 
    Is carbon considered a metal or a non-metal?

  • metal
  • nonmetal
  • other

  • 17. 
    Name the following: As2O3 ( Diarsenic Trioxide )

  • True
  • False

  • 18. 
    When you have F-F, what is the polarity?

  • nonpolar
  • polar
  • ionic
  • molecular

  • 19. 
    When you have H-Cl, what is the polarity?

  • nonpolar
  • polar
  • ionic
  • molecular

  • 20. 
    Is Hydrogen considered a metal or a non-metal?

  • Metal
  • Non-metal

  • 21. 
    Write the formula for: chlorine monoxide

  • ClO
  • Cl2O
  • CO
  • None of these

  • 22. 
    Write the formula for: dihydrogen monoxide

  • Le
  • H2
  • H2O
  • None of these

  • 23. 
    Name the following: PCl5 ( Phosphorus Pentafluoride )

  • True
  • False

  • 24. 
    When you have C-H, what is the polarity?

  • nonpolar
  • polar
  • ionic
  • molecular

  • 25. 
    How are ionic bonds formed?

  • When atoms share an electron
  • When opposite charged atoms attract
  • When one atom takes a proton
  • When one atom takes a neutron

  • 26. 
    How many bonds does each carbon have in diamond?

  • 2
  • 4
  • 6
  • 8
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