Chemistry What is the most common salt in sea water ? Potassium chloride Magnesium sulphate Sodium chloride Calcium carbonate Potassium chloride Magnesium sulphate Sodium chloride Calcium carbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the mass percentage of oxygen in carbon dioxide (CO2) 0.305 0.509 0.727 0.658 0.305 0.509 0.727 0.658 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind? 1/3 1/6 1/8 1/4 1/3 1/6 1/8 1/4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atomic number of an atom gives the number of which of the following ? Neutrons and protons Protons Electrons Neutrons Neutrons and protons Protons Electrons Neutrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a monoatomic gas? Neon Nitrogen Fluorine Oxygen Neon Nitrogen Fluorine Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The depletion of Ozone layer is mainly due to Radioactive rays Aviation fuels Chlorofluorocarbons Volcanic eruptions Radioactive rays Aviation fuels Chlorofluorocarbons Volcanic eruptions ANSWER DOWNLOAD EXAMIANS APP
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