On heating a mixture of common salt and K₂Cr₂O₇ in equal amount along with concentrated H₂SO₄ 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:

Principles Related to Practical Chemistry: JEE Main 2026 Chemistry question

JEE Main 2026 · 21 Jan, Evening shift · Q61

JEE Main 202621 Jan, Evening shiftChemistryMediumPrinciples Related to Practical Chemistry54× since 2004

On heating a mixture of common salt and

\mathrm{K_2Cr_2O_7}

in equal amount along with concentrated

\mathrm{H_2SO_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 :

JEE Main 2026 Principles Related to Practical Chemistry Question with Solution (21 Jan Evening shift, Q61) | JEE Arc

JEE Main 2026 · 21 Jan, Evening shift · Q61

JEE Main 202621 Jan, Evening shiftChemistryMediumPrinciples Related to Practical Chemistry54× since 2004

On heating a mixture of common salt and

\mathrm{K_2Cr_2O_7}

in equal amount along with concentrated

\mathrm{H_2SO_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 :