Chemistry Ozone saves the biosphere by absorbing high energy radiations called ________ . Infra-red (IR) Gamma rays X–rays Ultraviolet rays (UV) Infra-red (IR) Gamma rays X–rays Ultraviolet rays (UV) ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercial nitric acid is coloured because it contains dissolved : Nitrous oxide Nitrogen dioxide Oxygen Coloured impurities Nitrous oxide Nitrogen dioxide Oxygen Coloured impurities ANSWER DOWNLOAD EXAMIANS APP
Chemistry Of the following, which one pollutes the air of a big city ? Cadmium Chromium Lead Copper Cadmium Chromium Lead Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry A non-electronic conductor is None of these Iron Gas Carbon Copper Sulphate None of these Iron Gas Carbon Copper Sulphate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who first published the periodic table Henry Moseley Julius Lothar Meyer Dmitri Mendeleev John Dalton Henry Moseley Julius Lothar Meyer Dmitri Mendeleev John Dalton ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most extensive, commercially useful source of thorium as monazite sand occurs in India at Gujarat coast Travancore coast West Bengal coast Orissa coast Gujarat coast Travancore coast West Bengal coast Orissa coast ANSWER DOWNLOAD EXAMIANS APP
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