Air is composed of 78% nitrogen, 21% oxygen, 1% other gases including CO2.
The burning of fuels emits harmful gases into the air.
It measures the \\(CO_2 \\) content of the air, the relative humidity, and the room temperature.
Worksheets for ICSE class 7 chemistry
Support Services for ICSE class 7 chemistry
Regular Classes for ICSE class 7 chemistry