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 Which one of the following is used for dating very old objects of archaeological importance? Phosphorus-31 Tritium Radium Carbon-14 Phosphorus-31 Tritium Radium Carbon-14 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is a major green house gas? Carbon monoxide Freon Carbon dioxide Chloro fluorocarbon Carbon monoxide Freon Carbon dioxide Chloro fluorocarbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called Aerosols Fumes Mists Smoke Aerosols Fumes Mists Smoke ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals is used in Space Crafts to withstand high temperatures ? Ti Fe Pb Ni Ti Fe Pb Ni ANSWER DOWNLOAD EXAMIANS APP
Chemistry One of the constituents of tear gas is Ether Ethane Chloropicrin Ethanol Ether Ethane Chloropicrin Ethanol ANSWER DOWNLOAD EXAMIANS APP
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