Chemistry The lustre of the metals is because of Reflection of light due to the presence of free electrons High polish Absorption of light due to the presence of cavities High density, due to closed packing of atoms Reflection of light due to the presence of free electrons High polish Absorption of light due to the presence of cavities High density, due to closed packing of atoms ANSWER DOWNLOAD EXAMIANS APP
Chemistry ________ gives hardness to stainless steel. Lead Tin Zinc Carbon Lead Tin Zinc Carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Polythene is polymer of Aniline Acetylene Ethylene Propylene Aniline Acetylene Ethylene Propylene ANSWER DOWNLOAD EXAMIANS APP
Chemistry The polymer obtained by the condensation of hexamethylene diamine and adipic acid is : Nylon 66 Terylene Tollen's Bakelite Nylon 66 Terylene Tollen's Bakelite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas produced in marshy places due to decomposition of vegetation is Methane Carbon dioxide Carbon monoxide Sulphur dioxide Methane Carbon dioxide Carbon monoxide Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone saves the biosphere by absorbing high energy radiations called ________ . X–rays Ultraviolet rays (UV) Gamma rays Infra-red (IR) X–rays Ultraviolet rays (UV) Gamma rays Infra-red (IR) ANSWER DOWNLOAD EXAMIANS APP
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