Science STD 6 CH 15 air around us
Click here 4 science solution of STD 6 CH 15 air around us.
air around us is a useful chapter for class 6 national council for research and education....
air is transparent
air is smell less
air is a mixture
air occupies space
according to all above lines practical for students given in this chapter............................
we can use air from wind mill, blower and drier fan an kids toys..........
air contains 78 % nitrogen, 21 % oxygen and 0.04 % carbon dioxide..... and all other gases in 0.17 %
if the volumes of carbon dioxide increase many problems occur... we should try to increase level of oxygen which is use ful for soul to breathe without oxygen anything cant be burn and anyone cant take breathe........
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