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D And F Block Elements

KCET 2019

MCQ+1 / -02019

A mixture of \(\mathrm{NaCl}\) and \(\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7\) is heated with conc. \(\mathrm{H}_2 \mathrm{SO}_4\), deep red vapours are formed. Which of the following statements is false?

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