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  4. Which of the following solid salt on heating with solid K2Cr2O7 and concentration H2SO4 orange red vapours are evolved which turn aqueous NaOH solution yellow?

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Q. Which of the following solid salt on heating with solid $K_{2}Cr_{2}O_{7}$ and concentration $H_{2}SO_{4}$ orange red vapours are evolved which turn aqueous NaOH solution yellow?

NTA AbhyasNTA Abhyas 2020The d-and f-Block Elements

Solution:

NaCl gives following reactions as follows

Solution Solution