Chemistry The most abundant element in the earth’s atmosphere is Nitrogen Krypton Argon Oxygen Nitrogen Krypton Argon Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ? Sulphur dioxide Nitrous oxide Chlorofluorocarbon Carbon dioxide Sulphur dioxide Nitrous oxide Chlorofluorocarbon Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is the maximum number of electrons that can be present in M-shell? 2 8 32 18 2 8 32 18 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The acid used in lead storage cells is Sulphuric acid Nitric acid Phosphoric acid Hydrochloric acid Sulphuric acid Nitric acid Phosphoric acid Hydrochloric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used as filler in tyre of rubber ? Coal Carbon black Graphite Coke Coal Carbon black Graphite Coke ANSWER DOWNLOAD EXAMIANS APP
Chemistry The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of atomic structure periodic table of contents discovery of elements metallurgy atomic structure periodic table of contents discovery of elements metallurgy ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS