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Chemistry Test 267
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Chemistry Test 267
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  • Question 1/10
    4 / -1

    Consider the following equilibrium N2O4 (g) ⇔ 2NO2(g) Then select the correct graph: (graph represent relation between concertation of NO2 and N2O4 at equilibrium)

    Solutions

     

  • Question 2/10
    4 / -1

    If two different non-axial d-orbitals having XZ nodal plane form π bond by overlapping each other, then internuclear axis will be;

    Solutions

    Two different non-axial d-orbitals will lie in planes perpendicular to each other, such d-orbital will not formed

    Hence, (d) option is correct.

     

  • Question 3/10
    4 / -1

    Solutions

    Formation of osazone involves only C1 and C2 carbon atoms. The rest of the carbon atoms remains uneffected.

    Glucose and fructose differ only in the configurations of first and second carbon atoms remaining positions are similar. So they form same osazone.

     

  • Question 4/10
    4 / -1

    The cyclotrimetaphosphoric acid is

    Solutions

     

  • Question 5/10
    4 / -1

    In a face centered cubic lattice of edge length 'a' number of next to next nearest neighbor to corner atom and distance of corner atom to next to next nearest atom is respectively-

    Solutions

     

  • Question 6/10
    4 / -1

    CrO42(-) (yellow) changes to Cr2O72(-) (orange) in pH= x and Cr2O72(-) (orange) changes to CrO42(-) (yellow) in ph = y. Then x and y can be:

    Solutions

     

  • Question 7/10
    4 / -1

    Identify position most favorable for aromatic substitution (EAS)

    Solutions

    is activating group so it would activate ortho and para position for E.A.S but only para position is empty so EAS will take place there.

    Hence, option (b) is correct

     

  • Question 8/10
    4 / -1

    Polymer of prop – 2 – ene nitrile is-

    Solutions

     

  • Question 9/10
    4 / -1

    Molar mass of a substance, 1g of which when dissolved in 100g of water gave a solution whose boiling point is 100.1oC at a pressure of 1 atm (kb of water = 0.52 k kg mol–1) is-

    Solutions

     

  • Question 10/10
    4 / -1

    Arrange the following in increasing order of their Pka values

    Solutions

    Because acidic character depends on stability of conjugate ion.

     

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