Statement 1: Potassium dichromates gives deep red vapour with concentrated H2SO4 and sodium chloride.Statement 2: The reaction of sodium chloride with solid K2Cr2O7 and concentrated H2SO4 produces chromyl chloride.

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Both statements 1 and 2 are correct

Statement 1 is correct statement 2 is incorrect

Statement 1 is incorrect statement 2 is correct

Both statements 1 and 2 are incorrect

answer is A.

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Detailed Solution

K2Cr2O7+2H2SO4→2KHSO4+2CrO3+H2ONaCl+H2SO4→NaHSO4+HCl×4CrO3+2HCl→CrO2Cl2+H2O×2K2Cr2O7+6H2SO4+4NaCl→2KHSO4+4NaHSO4+2CrO2Cl2+3H2OCrO2Cl2 (Chromyl chloride) is liberated as deep red vapour.

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