Sakshi Ganotra
Jul 16, 2022 • 1h
Sharad Kothari
Aug 28, 2020 • 1h 30m
53K followers • Chemistry
Jan 7, 2022 • 1h 34m • 269 views
pollution ,air pollution, water pollution soil pollution and green chemistry, types of pollutants ,global warming , oxidising and reducing smogs ,ozone layer depletion and based questions .