Chemistry What is the element that is in the highest percentage in the composition of the earth ? Silicon Magnesium Oxygen Iron Silicon Magnesium Oxygen Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Bleaching powder is used in drinking water as a/an Coagulant Disinfectant Antibiotic Antiseptic Coagulant Disinfectant Antibiotic Antiseptic ANSWER DOWNLOAD EXAMIANS APP
Chemistry Among the following, which is always found in free-state in nature? Gold Copper Silver Sodium Gold Copper Silver Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry In upper layer of atmosphere ozone is formed by The combination of oxygen molecules The action of nitrogen on oxygen in atmosphere The action of ultraviolet rays on oxygen Subjecting oxygen to high pressure The combination of oxygen molecules The action of nitrogen on oxygen in atmosphere The action of ultraviolet rays on oxygen Subjecting oxygen to high pressure ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful Solar ultraviolet radiation CO2 in the air Solar infrared radiation SO2 in the air Solar ultraviolet radiation CO2 in the air Solar infrared radiation SO2 in the air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium bicarbonate is commercially known as Soda lime Caustic soda Washing soda Baking soda Soda lime Caustic soda Washing soda Baking soda ANSWER DOWNLOAD EXAMIANS APP