Chemistry The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is ozone methane oxygen helium ozone methane oxygen helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The monomer of polythene is ethylene vinyl chloride ethyl alcohol None of these ethylene vinyl chloride ethyl alcohol None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compound that has the least value for octane number is : 2-methyl heptane N-heptane Iso-octane 2,2-dimethyl hexane 2-methyl heptane N-heptane Iso-octane 2,2-dimethyl hexane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Gunpowder consits of a mixture of Sand and TNT Sulphur, sand and charcoal TNT and charcoal Nitre, sulphur and charcoal Sand and TNT Sulphur, sand and charcoal TNT and charcoal Nitre, sulphur and charcoal ANSWER DOWNLOAD EXAMIANS APP
Chemistry Maximum permissible concentration of total hardness in drinking water is 200 50 500 100 200 50 500 100 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is not present in cement ? Gypsum Alum Clay Alumina Gypsum Alum Clay Alumina ANSWER DOWNLOAD EXAMIANS APP
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