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Chemistry Test ...

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  • Question 1
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     Considering the elements B, C, N, F, and Si, the correct order of their non-metallic character is :

  • Question 2
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    The H–N–H angle in ammonia is 107.6º, while the H–P–H angle in phosphine is 93.5º. Relative to phosphine, the p-character of the lone pair on ammonia is expected to be

  • Question 3
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    Assertion A: The ionic radius of a cation is smaller than its atomic radius.

    Reason R: A cation is formed by the loss of one or more electrons, leading to a decrease in electron-electron repulsion and a contraction of the electron cloud.

  • Question 4
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    Assertion(A): One molar BaCl2 solution gives double the elevation in boiling point than one molar NaCl solution

    Reason(R): Ba2+ ions carry double the charge than Na+ ions

    The correct statement is

  • Question 5
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    The molality of 1 M solution of NaCl (specific gravity 1.0585 g/ml) is :-

  • Question 6
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    The correct order in which the C-O bond length in CO, CO3-2 and CO2 is:

  • Question 7
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    Solid KClO3 is taken in a container maintained at constant pressure of 1 atm. Upon heating following equilibrium is obtained 2KClO3(s) → 2KCl(s) + 3O2(g)

    If ΔH° = 25 kcal/mol and ΔS° = 50 cal/K, at what temperature equilibrium will be established in the container. (Ignore variation of ΔH° and ΔS° with temperature.)

  • Question 8
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  • Question 9
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    Identify C in the following sequence of reactions:

  • Question 10
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    The correct order for the rate of decarboxylation of following compounds with sodalime will be :-

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