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    DPP - 3

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    Imran Nazish
    The document contains a chemistry practice test with 20 multiple choice questions covering topics like chemical bonding, molecular structure, shapes of molecules, ionic bonding, and hybridization. The questions test understanding of concepts like polar vs. nonpolar molecules, factors that determine molecular shape, relative sizes of ionic radii, molecular geometry, dipole moments, and types of chemical bonds.

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    DPP - 3

    Uploaded by

    Imran Nazish
    8 views3 pages
    The document contains a chemistry practice test with 20 multiple choice questions covering topics like chemical bonding, molecular structure, shapes of molecules, ionic bonding, and hybridization. The questions test understanding of concepts like polar vs. nonpolar molecules, factors that determine molecular shape, relative sizes of ionic radii, molecular geometry, dipole moments, and types of chemical bonds.

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    The document contains a chemistry practice test with 20 multiple choice questions covering topics like chemical bonding, molecular structure, shapes of molecules, ionic bonding, and hybridization. The questions test understanding of concepts like polar vs. nonpolar molecules, factors that determine molecular shape, relative sizes of ionic radii, molecular geometry, dipole moments, and types of chemical bonds.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    8 views3 pages

    DPP - 3

    Uploaded by

    Imran Nazish
    The document contains a chemistry practice test with 20 multiple choice questions covering topics like chemical bonding, molecular structure, shapes of molecules, ionic bonding, and hybridization. The questions test understanding of concepts like polar vs. nonpolar molecules, factors that determine molecular shape, relative sizes of ionic radii, molecular geometry, dipole moments, and types of chemical bonds.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 3

    Class : XIth Subject : CHEMISTRY

    Date : DPP No. : 3

    Topic :- Chemical Bonding and Molecular Structure

    1. Which one is polar molecule among the following?


    a) CH4 b) CCl4 c) CO2 d) H2O

    2. Shape of molecules is decided by:


    a) Sigma bond
    b) π-bond
    c) Both sigma and π-bonds
    Neither sigma nor π-bonds
    d)

    3. The shape of carbon dioxide is


    a) Pyramidal b) Tetrahedral c) Planar d)Linear

    4. The correct ionic radii order is:


    a) N3― > O2― > F― > 𝑁a+ > 𝑀g2+ > 𝐴l3+
    b) N3― > Na+ > O2― > F― > 𝑀g2+ > 𝐴l3+
    c) Na+ > O2― > N3― > F― > 𝑀g2+ > 𝐴l3+
    d)O2― > F― > 𝑁a+ > N3― > 𝑀g2+ > 𝐴l3+

    5. Which is not linear?


    a) CO2 b) HCN c) C2H2 d) H2O

    6. Hybridisation of oxygen in diethyl ether is


    a) Sp b) 𝑠𝑝2 c) 𝑠𝑝3 d)𝑠𝑝3𝑑

    7. What is the effect of more electronegative atom on the strength of ionic bond?
    a) Increases b) Decreases c) Remains the same d)None of these

    8. Which of the following two are isostructural?


    a) XeF2, IF―
    2 b) NH3, BF3 c) CO2― 2―
    3 , SO3 d) PCl5, ICl5
    9. NF3 is:
    a) Non-polar compound
    b) Electrovalent compound
    c) Having low value of dipole moment than NH3
    d)Having more dipole moment than NH3

    10. Molecular size of ICl and Br2 is nearly same, but boiling point of ICl is about 40C higher than B
    r2. This might be due to:
    a) I—Cl bond is stronger than Br—Br bond
    b) Ionisation energy of I < ionisation energy of Br
    c) ICl is polar where as Br2 is non-polar
    d)The size of I > size of Br

    11. Which molecule is linear?


    a) H2S b) NO2 c) ClO2 d) CO2

    12. Which of the following shows minimum melting point?


    a) Naphthalene b) Diamond c) NaCl d)Mn

    13. Which of the following does not have a lone pair on the central atom?
    a) NH3 b) PH3 c) BF3 d) PCl3

    14. Molecular orbital theory was given by


    a) Kossel b) Mosley c) Mulliken d)Werner

    15. NH3 has a net dipole moment, but boron trifluoride (BF3) has zero dipole moment, because:
    a) B is less electronegative than N
    b) F is more electronegative than H
    c) BF3 is pyramidal while NH3 is planar
    d) NH3 is pyramidal while BF3 is trigonal planar

    16. Proton plays an important role in…bonding.


    a) Electrovalent b) Hydrogen c) Covalent d)Coordinate

    17. Which represents a collection of isoelectronic species?


    a) Be, Al3+, Cl― b) Ca2+, Cs+, Br c) Na+, Ca2+, Mg2+ d)N3―,F―,Na+

    18. An electrovalent compound does not exhibit space isomerism due to:
    a) Presence of ions
    b) High melting point
    c) Strong electrostatic forces between constituent ions
    d)Non-directional nature of electrovalent bond
    19. In which molecule Sulphur atom is not 𝑠𝑝3-hybridized?
    a) SO2―
    4 b) SF4 c) SF2 d)None of these

    20. In which one of the following species, the central atom has the type of hybridization which is
    not the same as that present in other three?
    a) SF4 b) I―
    3 c) SbCl2―
    5 d) PCl5

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