Chemistry · 2026
JEE Main · 21 January 2026, Shift 2 · Q70
On heating a mixture of common salt and K_2 Cr_2 O_7 in equal amount along with concentrated H_2 SO_4 in a test tube, a gas is evolved. Formula of…
On heating a mixture of common salt and $\displaystyle \mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ in equal amount along with concentrated $\displaystyle \mathrm{H}_2 \mathrm{SO}_4$ in a test tube, a gas is evolved. Formula of the gas evolved and oxidation state of the central metal atom in the gas respectively are :
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle \mathrm{CrO}_2 \mathrm{Cl}_2$ and +$\displaystyle 6$
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JEE Main 2026 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.