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    				| 1. | 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.A. `NaBr`B. `NaCl`C. `NaNO_(2)`D. `Nal` | 
| Answer» Correct Answer - B | |