When ${\rm{KCl}}$ is heated with conc. ${{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4}$ and solid ${{\rm{K}}_2}{\rm{C}}{{\rm{r}}_2}{{\rm{O}}_7}$ , we get:

NEET UG CHEMISTRY MCQ: S-BLOCK ELEMENTS

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Understanding +4 | -1

When

\mathrm{KCl}

is heated with conc.

{\mathrm{H}_2}\mathrm{S}{\mathrm{O}_4}

and solid

{\mathrm{K}_2}\mathrm{C}{\mathrm{r}_2}{\mathrm{O}_7}

, we get:

View answer and explanation

Correct option: A

Chromyl chloride

Option A is correct because the reaction of potassium chloride, concentrated sulfuric acid, and potassium dichromate produces chromyl chloride (

\mathrm{CrO_2Cl_2}

), which is a reddish-brown volatile liquid.