Assertion: Chloride is confirmed by chromyl chloride test
Reason: Chlorine is evolved when chloride is heated with con. $H_{2}S{O}_4$

Chloride liberates deep red vapours of chromyl chloride $\left(Cr{O}_{2}C{l}_2\right)$ when heated with solid $K_{2}C{r}_2{O}_7$ and $con.H_{2}S{O}_4$

$K_{2}C{r}_2{O}_7+4NaCl+6H_{2}S{O}_4\underset{ }{\overset{ }{\to }}2Cr{O}_{2}C{l}_2+2KHS{O}_4+4NaHS{O}_4$

But Chlorine is not evolved when chloride is treated with conc.$H_{2}S{O}_4.$

$2NaCl+H_{2}S{O}_4\to 2HCl+N{a}_{2}S{O}_4$