Chemistry What is the most common salt in sea water ? Calcium carbonate Potassium chloride Magnesium sulphate Sodium chloride Calcium carbonate Potassium chloride Magnesium sulphate Sodium chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry When iron rusts, its weight Increases Decreases First increases and then decreases Remains the same Increases Decreases First increases and then decreases Remains the same ANSWER DOWNLOAD EXAMIANS APP
Chemistry In upper layer of atmosphere ozone is formed by The action of ultraviolet rays on oxygen The action of nitrogen on oxygen in atmosphere Subjecting oxygen to high pressure The combination of oxygen molecules The action of ultraviolet rays on oxygen The action of nitrogen on oxygen in atmosphere Subjecting oxygen to high pressure The combination of oxygen molecules ANSWER DOWNLOAD EXAMIANS APP
Chemistry Maximum permissible concentration of copper in drinking water in mg/L is 1 2 0.05 0.01 1 2 0.05 0.01 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Lead in water can cause Hair falling Eye disease Kidney damage Arthritis Hair falling Eye disease Kidney damage Arthritis ANSWER DOWNLOAD EXAMIANS APP
Chemistry Lead pencil contains Lead Ferrous sulphide Graphite Lead sulphide Lead Ferrous sulphide Graphite Lead sulphide ANSWER DOWNLOAD EXAMIANS APP
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