Chemistry An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is 19 17 36 53 19 17 36 53 ANSWER DOWNLOAD EXAMIANS APP
Chemistry In drinking water supply, which of the following treatments is not involved Coagulation Sedimentation Disinfection Softening Coagulation Sedimentation Disinfection Softening ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is found in kidney stones? Sodium chloride Calcium acetate Calcium oxalate Sodium oxalate Sodium chloride Calcium acetate Calcium oxalate Sodium oxalate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element is Oxygen Calcium Silicon Nitrogen Oxygen Calcium Silicon Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is not a cause for present global warming and climate change ? Deforstation CFC emission Carbondioxide emission Methane emission Deforstation CFC emission Carbondioxide emission Methane emission ANSWER DOWNLOAD EXAMIANS APP
Chemistry What material is used to make electric heater coil ? Iron Silver Nichrome Copper Iron Silver Nichrome Copper ANSWER DOWNLOAD EXAMIANS APP
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