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D And F Block Elements

JEE Main 2026 (Online) 21st January Evening Shift

MCQ+4 / -12026

On heating a mixture of common salt and $K_2Cr_2O_7$ in equal amount along with concentrated $H_2SO_4$ 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:

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