On heating K(2)Cr(2)O(7) with NaCl and c...

On heating `K_(2)Cr_(2)O_(7)` with NaCl and conc. `H_(2)SO_(4)`, the gas liberated is

`CrO_(2)Cl_(2)`

`CrCl_(3)`

`Cr_(2)O_(3)`

`CrOCl_(2)`

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Which of the following on heating with K_(2)Cr_(2)O_(7) and conc. H_(2)SO_(4) with organge red color vapours ?

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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.

Which of the following salt on heating with solid K_(2)Cr_(2)O_(7) and Conc. H_(2)SO_(4) , orange red vapours are evolved which turn NaOH solution yellow.

On heating a mixture of NaCl, K_(2)Cr_(2)O_(7) and conc. H_(2)SO_(4) which of the following is formed ?

On heating NaCl+K_(2)CrO_(7)+conc.H_(2)SO_(4) , the gas comes out is

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