निम्न में से कौन सी गैस दहन (जलने) में सहायक है?

Select the option that does NOT belong to the same category as the others based on chemical nature or elemental status (e.g., noble gas vs greenhouse/triatomic gases): Ozone, Carbon dioxide, Helium, Oxygen

The mass percentage composition of three gases in a gas mixture is approximately CO2: 60%, SO2: 30%, NO2: 10%. If the total pressure in the container is 3.00 atm, what is the partial pressure of SO2 in the mixture? (Molar masses: CO2 = 44 g/mol, SO2 = 64 g/mol, NO2 = 46 g/mol)