Chemistry The method that cannot be used for removing permanent hardness of water is distillation adding caustic soda boiling adding sodium carbonate distillation adding caustic soda boiling adding sodium carbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The “King of Metals” is : Iron Gold Aluminium Silver Iron Gold Aluminium Silver ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is the purest form of carbon Coal Diamond Iron Graphite Coal Diamond Iron Graphite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Higher concentration of nitrogen dioxide in atmosphere air causes Asphyxiation Bronchitis Corrosion Cancer Asphyxiation Bronchitis Corrosion Cancer ANSWER DOWNLOAD EXAMIANS APP
Chemistry The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ? 12 6 18 Zero 12 6 18 Zero ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful SO2 in the air Solar ultraviolet radiation CO2 in the air Solar infrared radiation SO2 in the air Solar ultraviolet radiation CO2 in the air Solar infrared radiation ANSWER DOWNLOAD EXAMIANS APP
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