On warming a mixture of solid NaCl and K2Cr 2O7 produces a gas (1) orange coloured gas is produced. (2) which on passing into Pb(NO3 )2 solution produces yellow residue. (3) when passed in toluene produces, benzaldehyde. (4) all of the above.

On warming a mixture of solid NaCl and K2Cr 2O7 produces a gas (1) or

1.	On warming a mixture of solid NaCl and K2Cr 2O7 produces a gas (1) orange coloured gas is produced. (2) which on passing into Pb(NO3 )2 solution produces yellow residue. (3) when passed in toluene produces, benzaldehyde. (4) all of the above.
Answer» The Correct option is (4) all of the above.

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On warming a mixture of solid NaCl and K2Cr 2O7 produces a gas (1) orange coloured gas is produced. (2) which on passing into Pb(NO3 )2 solution produces yellow residue. (3) when passed in toluene produces, benzaldehyde. (4) all of the above.

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