Chemistry The material used in the manufacture of lead pencil is Mica Graphite Carbon Lead Mica Graphite Carbon Lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals pollutes the air of a city having large number of automobiles? Lead Cadmium Chromium Copper Lead Cadmium Chromium Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? Carbon dioxide Nitrous oxide Chlorofluorocarbons Sulphur dioxide Carbon dioxide Nitrous oxide Chlorofluorocarbons Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Cement is formed by strongly heating a mixture of Limestone and graphite Limestone and clay Chalk and graphite Clay and graphite Limestone and graphite Limestone and clay Chalk and graphite Clay and graphite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The depletion of ozone layer is due to Ethane Carbon dioxide Chloro fluoro carbon Sulphur dioxide Ethane Carbon dioxide Chloro fluoro carbon Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone saves the biosphere by absorbing high energy radiations called ________ . Ultraviolet rays (UV) Infra-red (IR) X–rays Gamma rays Ultraviolet rays (UV) Infra-red (IR) X–rays Gamma rays ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS