Chemistry The compound to which H2 does not add is Tetra – a –naphthylethylene Tetraphenyl ethylene Biphenyl ethylene Tetra –9 – phenanthrylethylene Tetra – a –naphthylethylene Tetraphenyl ethylene Biphenyl ethylene Tetra –9 – phenanthrylethylene ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is a soluble salt in H2O PbCl2 Zn(OH)2 CuS CaCl2 PbCl2 Zn(OH)2 CuS CaCl2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The name of unreactive gas is Hydrogen Carbon dioxide Oxygen Nitrogen Hydrogen Carbon dioxide Oxygen Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The elements with atomic numbers 9, 17, 35, 53, 85 are all Light metals Halogens Noble gases Heavy metals Light metals Halogens Noble gases Heavy metals ANSWER DOWNLOAD EXAMIANS APP
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 helium methane oxygen ozone helium methane oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The heaviest naturally occurring element is: Mercury Uranium Polonium Thorium Mercury Uranium Polonium Thorium ANSWER DOWNLOAD EXAMIANS APP
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