Question

Meri Ma Kam Nahin Karte is kathan se aapko kya lagta hai spasht kar0 geography class 7th

Answer 1

Answer:

• When you are in the laboratory and take a direct sniff of the chemicals you are using, you run the risk of damaging your mucous membranes or your lungs. When it is necessary to smell chemicals in the lab, the proper technique is to cup your hand above the container and waft the air toward your face.