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Chemistry Test ...

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  • Question 1
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    Ag|AgBr |Br–||Fe3+,  Fe2+|Pt

                  0.34M   0.1M  0.02M

    AgBr + e → Ag + Br   E° = 0.0713V

    Fe3+ + e– → Fe2+           E° = 0.77V

    Find emf of cell at 25°C

  • Question 2
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    Directions For Questions

    Consider the plots, given below, for the type of reaction, A → B + C

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    These plots respectively corresponds to the reaction order :-

  • Question 3
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    An element 'A' in a compound ABD has oxidation number –n. It is oxidised by Cr2O72– in acidic medium. In the experiment 1.68 × 10–3 moles of K2Cr2O7 were used for 3.36 × 10–3 moles of ABD. The new oxidation number of A after oxidation is :-

  • Question 4
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    Arrange the resonating structures of CH2N2 in increasing order of stability.

  • Question 5
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    The final product P is -

  • Question 6
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    Directions For Questions

    In the following reaction, three products a,b,c are obtained.

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    The approximate experimental yields of the three compounds were 64%, 33% and 3%. Which of the following is the correct with respect to yield and the corresponding product?

  • Question 7
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    The major product obtained when Br2/Fe is treated with 

  • Question 8
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     Major product

  • Question 9
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    In the following reaction sequence, structures of P and Q, are respectively

  • Question 10
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    The pyrimidine bases present in DNA are

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