Which of the following pair of gases are colorless and odourless in nature?

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O2 ; CO2

O2 ; NH3

CO2 ; SO2

I2 ; Cl2

answer is A.

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Detailed Solution

Colorless and odourless gases →O2;CO2;N2 Colorless gases with odour gases →NH3;SO2;HCl;H2SColored gases → NO2 (Brown) ; Br2 (Reddish Brown) I2 (Violet) ; Cl2 (Greenish Yellow)

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