Chemistry The third shell of an atom can have a maximum of ______ electrons 21 15 13 18 21 15 13 18 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is usually not an air-pollutant? Sulphur dioxide Hydrocarbons Nitrous oxide Carbon dioxide Sulphur dioxide Hydrocarbons Nitrous oxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The amount of chlorine available in water after disinfection is called as Free available chlorine Free chlorine Residual chlorine Combined available chlorine Free available chlorine Free chlorine Residual chlorine Combined available chlorine ANSWER DOWNLOAD EXAMIANS APP
Chemistry The electronic configuration of an atom having atomic number ‘20’ is 2, 8, 8, 2 2, 10, 8 2, 6, 8, 4 2, 8, 10 2, 8, 8, 2 2, 10, 8 2, 6, 8, 4 2, 8, 10 ANSWER DOWNLOAD EXAMIANS APP
Chemistry A mixture of water and alcohol can be separated by Decantation Filtration Distillation Evaporation Decantation Filtration Distillation Evaporation ANSWER DOWNLOAD EXAMIANS APP
Chemistry An example of replenishable energy source is– Petroleum Lignite Coal Biomass Petroleum Lignite Coal Biomass ANSWER DOWNLOAD EXAMIANS APP
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