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$ CuS will give H2S in dilute acid test....

$ CuS will give `H_2S` in dilute acid test.
! All sulphide react with dil. `H_2SO_(4)` to give `H_(2)S`.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true but R is not a correct explanation of A

C

A is true but R is false

D

A is false but R is true.

Text Solution

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Assertion : CuS is one such exception which is not decomposed by dil. `H_(2)SO_(4)`
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Ethoxy ethane with dil. H_(2)SO_(4) gives

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Knowledge Check

  • Copper react with conc. H_2SO_4 to gives

    A
    `CuSO_(4)+H_(2)`
    B
    `CuSO_(4)+SO_(2)+H_(2O`
    C
    `CuSO_(4)+S`
    D
    `CuSO_(4)+O_(2)`

  • Ethoxy ethane with dil. H_(2)SO_(4) gives

    A
    `C_(2)H_(5)OH`
    B
    `CH_(3) OH, C_(2)H_(5)HSO_(4)`
    C
    `C_(2)H_(5)OH, C_2H_(5)HSO_(4)`
    D
    `CH_(3)OH, C_(2)H_(4)`

  • HCOOH reacts with conc. H_(2)SO_(4) to give :

    A
    `CO_(2)`
    B
    `CO`
    C
    oxalic acid
    D
    acetic acid
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    2. $ PbCl(2) will give HCl in conc. H(2)SO(4) test. ! All chlorides rea...

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