Chemistry What are the number of moles of CO2 which contains 16 g of oxygen? 0.5 mole 0.2 mole 0.25 mole 0.4 mole 0.5 mole 0.2 mole 0.25 mole 0.4 mole ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is 6.023 x 1019 1.568 x 103 6.023 x 1023 4.84 x 1017 6.023 x 1019 1.568 x 103 6.023 x 1023 4.84 x 1017 ANSWER DOWNLOAD EXAMIANS APP
Chemistry All isotopes of the same element have ________ The same atomic number but different atomic masses Different atomic numbers and different atomic mass The same atomic number and the atomic mass Different atomic numbers and the same atomic mass The same atomic number but different atomic masses Different atomic numbers and different atomic mass The same atomic number and the atomic mass Different atomic numbers and the same atomic mass ANSWER DOWNLOAD EXAMIANS APP
Chemistry Impure camphor is purified by Fractional crystallisation Sublimation Fractional distillation Steam distillation Fractional crystallisation Sublimation Fractional distillation Steam distillation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ? Nitrous oxide Carbon dioxide Chlorofluorocarbon Sulphur dioxide Nitrous oxide Carbon dioxide Chlorofluorocarbon Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium is produced by the electrolysis of Aqueous brine solution Its cyanide complex Molten sodium chloride Molten sodium carbonate Aqueous brine solution Its cyanide complex Molten sodium chloride Molten sodium carbonate ANSWER DOWNLOAD EXAMIANS APP
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