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

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

The evolution of red-brown gas on heating a salt with K_(2)Cr_(2)O_(7) and conc. H_(2)SO_(4) can arise from

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

A laboratory reagent imparts green colour to the flame. On heating with solid K_(2)Cr_(2)O_(7) and conc. H_(2)SO_(4) it evolves a red gas. Identify the reagent .

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

Name the compound that evolves as vapours when NaCl is heated with K_(2)Cr_(2)O_(7) and conc. H_(2)SO_(4) . Also mention its colour and chemical formula.