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When Lassiange extract of Methylamine re...

When Lassiange extract of Methylamine react with `FeSO_(4)//"dilute" H_(2)SO_(4)` what happened ?

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Prussian blue colour will appear.
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Which of the following react with dil H_(2)SO_(4) ?

Zinc sulphide reacts with dilute H_(2)SO_(4) to liberate which gas.

Knowledge Check

  • The oxide that give H_(2)O_(2) on treatment with dilute H_(2)SO_(4) is

    A
    `PbO_(2)`
    B
    `BaO_(2).8H_(2)O`
    C
    `MnO_(2)`
    D
    `TiO_(2)`

  • In electrolysis of dilute H_(2)SO_(4) what is liberated at anode?

    A
    `H_2`
    B
    `SO_4^(2-)`
    C
    `SO_2`
    D
    `O_2`

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    What happens when a sulphite reacts with dilute H_(2)SO_(4) in presence of zinc ?

    When CuSO_(4).5H_(2)O is heated, what happens ?

    Why Zn reacts with dilute H_(2)SO_(4) to give H_(2) gas but Cu does not ?

    Name the anions whch giive brown fumes on reacting with dilute/conc. H_(2)SO_(4)

    An aqueous solution of a white salt A gives a white precipitate B on treatment with dilute HCl in cold condition. B is soluble in boiling water. An aqeous solution of A gives a yellow precipitate on treatment with a solution of K_(2)CrO_(4) . The soda extract of A is acidified with diolute H_(2)SO_(4) , boiled to remove CO_(2) and treated with a freshly prepared solution of FeSO_(4) . concentratd H_(2)SO_(4) is added to the resulting solution. a brownn ring is formed at the junction of the two layers. Q. The salt A is:

    Why is it necessary to test for the acid radicals first (with dilute) H_(2)SO_(4) and then with conc. H_(2)SO_(4) ?

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