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A gas when passed through K(2)Cr(2)O(7) ...

A gas when passed through `K_(2)Cr_(2)O_(7)` and dil. `H_(2)SO_(4)` solution turns it green, the gas is :

A

`CO_(2)`

B

`NH_(3)`

C

`SO_(2)`

D

`Cl_(2)`

Text Solution

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The correct Answer is:
C
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Explore conceptually related problems

The solid laboratory reagent A gives the following reactions: I. It imparts green colour to the flame. II. Its solution does not give a precipitate on passing H_(2)S. III. When it is heated with solid K_(2)Cr_(2)O_(7) and concentrated H_(2)SO_(4) a red gas is evolved. When this gas is passed into aqueous solution of NaOH it turns yellow: Identify A.

When H_(2)S is passed through acidified K_(2)Cr_(2)O_(7) solution, the solution turns :

When SO_(4) is passed through acidified K_(2)Cr_(2)O_(7) solution

When SO_(2) is passed through acidified K_(2)Cr_(2)O_(7) solution

A colourless inorganic compound (A) imparts a green colour to flame. Its solution does not give white precipitate with H_(2)S . Its solution gives white precipitate with conc. H_(2)SO_(4) which is insoluble in dil. H_(2)SO_(4) . When it is heated with K_(2)Cr_(2)O_(7) and conc. H_(2)SO_(4) , a red gas is evolved. The gas when passed through aqueous NaOH solution turns it Yellow. Identify the compound (A) and give chemical reactions.

When K_(2)Cr_(2)O_(7) is heated with conc. H_(2)SO_(4) and soluble chloride such as KCl :

H_(2)S gas is passed through an acidic solution of K_(2)Cr_(2)O_(7) . The solution turns milky, why?

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