Q.

On heating NaCl+K2Cr2O7+ conc. H2SO4, the gas comes out is

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a

O2

b

Cl2

c

CrOCl2

d

CrO2Cl2

answer is D.

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Detailed Solution

4NaCl+K2​Cr2​O7​+6H2​SO4​→2CrO2​Cl2​+2KHSO4​+4NaHSO4​+3H2​OCrO2Cl2 is a orange red gas.
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