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6x10^(-3) mole K2Cr2O7 reacts completel...

6x`10^(-3)` mole `K_2Cr_2O_7` reacts completely with 9x`10^(-3)` mole `X^(n+)` to give `XO_3^(-1)` and `Cr^(3+)`. the value of n is :

A

1

B

2

C

3

D

None of these

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The correct Answer is:
A
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Knowledge Check

  • 3xx10^(-3) mole K_2Cr_2O_7 reacts completely with 4.5xx10^(-3) mole X^(n+) to give XO_3^(-) and Cr^(3+) . The value of is :

    A
    3
    B
    1
    C
    0
    D
    4

  • 0.6 moles of K_(2)Cr_(2)O_(7) can oxidise-

    A
    3.6 mol of `FeSO_(4)` to `Fe_(2)(SO_(4))_(3)`
    B
    0.1 mol of `FeSO_(4)` to `Fe_(2)(SO_(4))_(3)`
    C
    0.05 mol of `Sn^(+2)` to `Sn^(+4)`
    D
    1.8 mol of `Sn^(+2)` to `Sn^(+4)`

  • If (9/7)^3 (49/81)^(2x-6) =(7/9)^3 the value of x is

    A
    9
    B
    6
    C
    8
    D
    12

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    If int (2x^(3)-7x+2)/(x^(3)+2x^(2)) dx = 2x - n log |x| - 1/x +c then the value of n is -

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