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Chemical Bonding and Molecular Structure

Chemistry · Class 11 · CBSE

ChemistryClass 11CBSEEasy
Q1/15
45s

A sigma (s) bond is formed by:

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All 15 questions in this quiz

  1. According to Molecular Orbital Theory, oxygen (O2) is:

    1. Diamagnetic because all electrons are paired
    2. Paramagnetic because it contains two unpaired electrons
    3. Ionic in nature
    4. A polar molecule because of unequal sharing

  2. Which of the following has sp2 hybridization?

    1. CH4
    2. C2H4
    3. C2H2
    4. NH4+

  3. Which type of overlap forms a pi bond?

    1. End-to-end overlap
    2. Sidewise overlap of parallel p-orbitals
    3. Overlap of s-orbitals only
    4. Overlap of d-orbitals only

  4. A sigma (s) bond is formed by:

    1. Sidewise overlap of orbitals
    2. End-to-end overlap of orbitals
    3. Overlap of nuclei only
    4. Transfer of electrons

  5. Which of the following molecules is polar?

    1. CO2
    2. CH4
    3. H2O
    4. BF3

  6. Which molecule is linear according to VSEPR theory?

    1. NH3
    2. H2O
    3. CO2
    4. CH4

  7. Which intermolecular force is primarily responsible for the unusually high boiling point of water?

    1. Ionic bonding
    2. Hydrogen bonding
    3. Metallic bonding
    4. Covalent bonding

  8. Which molecule has a bent (V-shaped) molecular geometry?

    1. CO2
    2. CH4
    3. H2O
    4. BF3

  9. The bond angle in methane is approximately:

    1. 90 degrees
    2. 104.5 degrees
    3. 109.5 degrees
    4. 120 degrees

  10. The hybridization of carbon in methane (CH4) is:

    1. sp
    2. sp2
    3. sp3
    4. dsp2

  11. Which theory explains the shapes of molecules based on electron pair repulsion?

    1. Molecular Orbital Theory
    2. Valence Bond Theory
    3. VSEPR Theory
    4. Crystal Field Theory

  12. Which type of bond is formed by the equal sharing of electrons between identical atoms?

    1. Ionic bond
    2. Polar covalent bond
    3. Non-polar covalent bond
    4. Metallic bond

  13. Which of the following compounds contains a covalent bond?

    1. NaCl
    2. MgO
    3. CH4
    4. KBr

  14. An ionic bond is formed by:

    1. Sharing of electrons
    2. Transfer of electrons from one atom to another
    3. Sharing of protons
    4. Transfer of neutrons

  15. According to the octet rule, atoms tend to:

    1. Lose all their electrons
    2. Achieve eight electrons in their valence shell for stability
    3. Gain unlimited electrons
    4. Increase the number of protons