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Chemistry Test ...

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  • Question 1
    1 / -0

    The uncertainty in position of an electron is equal to its de Broglie wavelength. The minimum percentage error in its measurement of velocity under this circumstance will be approximately.

  • Question 2
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  • Question 3
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    When conc. H2SO4 is treated with K4[Fe(CN)6], Co gas is evolved. By mistake, somebody used dil.H2SO4, then which gas will be released?

  • Question 4
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    \begin{equation}XCl _{2}( excess )+ YCl _{2} \rightarrow XCl _{4}+ Y \downarrow\end{equation}\begin{equation}Y O \longrightarrow \frac{\Delta}{>400^{\circ} C} \rightarrow \frac{1}{2} O_{2}+Y\end{equation} ore of Y would be

  • Question 5
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    Salt(A)+S→B→BaCl2Whiteppt.
    A is paramagnetic. Thus A is

  • Question 6
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    [X3B ← NH3], in which of the following boric halide, tendency to accept electrons from nitrogen of ammonia will be least (X = halogens)

  • Question 7
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    The enolate ion that reacts with 3–buten–2–one to form (Y) is:

  • Question 8
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    Major product A. is:

  • Question 9
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    Product A is;

  • Question 10
    1 / -0

    E1, E2 and E3 are activation energies then, which of the following is correct.

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