Chemistry The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is 4.84 x 1017 6.023 x 1023 1.568 x 103 6.023 x 1019 4.84 x 1017 6.023 x 1023 1.568 x 103 6.023 x 1019 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Normal rainwater is slightly acidic due to the presence of Sulphur dioxide Methane None of these Carbon dioxide Sulphur dioxide Methane None of these Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Gunpowder consits of a mixture of TNT and charcoal Sulphur, sand and charcoal Sand and TNT Nitre, sulphur and charcoal TNT and charcoal Sulphur, sand and charcoal Sand and TNT Nitre, sulphur and charcoal ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals pollutes the air of a city having large number of automobiles? Cadmium Chromium Copper Lead Cadmium Chromium Copper Lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry The method that cannot be used for removing permanent hardness of water is adding sodium carbonate adding caustic soda distillation boiling adding sodium carbonate adding caustic soda distillation boiling ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element is Silicon Oxygen Calcium Nitrogen Silicon Oxygen Calcium Nitrogen ANSWER DOWNLOAD EXAMIANS APP
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