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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

Verified by Experts

The correct Answer is:
B, C
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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.

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