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    DPP - 06 - Chemical Bonding-1

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    Priyanshu Kaswan

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    DPP - 06 - Chemical Bonding-1

    Uploaded by

    Priyanshu Kaswan
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    DPP - 06 _ Chemical Bonding-1

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    4 views3 pages

    DPP - 06 - Chemical Bonding-1

    Uploaded by

    Priyanshu Kaswan

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
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    (Inorganic Chemistry) Chemical Bonding-1

    DPP-06
    1. A : tetracyanomethane B : carbondioxide C : benzene D : 1,3-buta-di-ene Ratio of σ and π bonds
    is in order :
    (A) A = B < C < D (B) A = B < D < C (C) A = B = C = D (D) C < D < A < B
    2. The geometry of ammonia molecule can be best described as
    (A) nitrogen at one vertex of a regular tetrahedron, the other three vertices being occupied by
    the three hydrogens
    (B) nitrogen at the centre of the tetrahedron, three of the vertices being occupied by three
    hydrogens
    (C) nitrogen at the centre of an equilateral triangle, three corners being occupied by three
    hydrogens
    (D) nitrogen at the junction of a T, three open ends being occupied by three hydrogens.
    3. Find the molecule which is planar and polar.
    (A) B3 N3 H6 (B) F2 C = C = C = CF2 (C) BrF2 Cl (D) F2 C = C = CF2
    4. Find out the incorrect order of the dipole moment among the following pair of compound
    (A) NH3 > NF3 (B) p-dichloro benzene > o-dichloro benzene
    (C) CH3 Cl > CH2 Cl2 (D) SiF4 < SF4
    5. Statement-1 : Dipole moment of H2 O is more than that of OF2 .
    Statement-2 : In H2 O, the resultant bond dipole of O − H bond and the resultant lone pair
    moment are in opposite direction.
    (A) Statement-1 is true, statement-2 is true and statement-2 is correct explanation for
    statement-1.
    (B) Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation
    for statement-1.
    (C) Statement-1 is true, statement-2 is false.
    (D) Statement-1 is false, statement-2 is true.
    6. Statement-1 : Allene is a non polar molecule.
    Statement-2 : Allene is non planar molecule.
    (A) Statement-1 is true, statement-2 is true and statement-2 is correct explanation for
    statement-1.
    (B) Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation
    for statement-1.
    (C) Statement-1 is true, statement-2 is false.
    (D) Statement-1 is false, statement-2 is true.

    APNI KAKSHA 1
    (Inorganic Chemistry) Chemical Bonding-1
    More than may be correct
    7. Which of the following statements is correct in the context of the allene molecule, C3 H4 ?
    (A) The central carbon atom is sp hybridized
    (B) The terminal carbon atoms are sp2 hybridized
    (C) The planes containing the CH2 groups are mutually perpendicular to permit the formation of
    two separate π-bonds.
    (D) C3 H4 is a planar molecule
    8. Structure of Na2 [ B4 O5 (OH)4 ] ⋅ 8H2 O contains
    (A) Two triangular and two tetrahedral units of boron
    (B) Three triangular and one tetrahedral units of boron
    (C) Five B-O-B linkages
    (D) One peroxy linkage
    9. Column-I Column-II
    (A) 2 lone pairs on central atom (P) XeF5−
    (B) Zero dipole moment (Q) NF3
    (C) Planar (R) ICl3
    (D) All adjacent bond angles are equal (S) XeF4
    10. Prove that dipole moment of C6 H5 Cl and m − C6 H4 Cl2 are same.

    APNI KAKSHA 2
    (Inorganic Chemistry) Chemical Bonding-1
    ANSWER KEY
    DPP-6
    1. A 2. B 3. C 4. B 5. C 6. B 7. ABC
    8. AC 9. (A) P, R, S; (B) P, S; (C) P, R, S; (D) P, Q, R, S

    APNI KAKSHA 3

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