Chemistry Many people died in London in 1952 as result of air pollution producing Fog Sleet Smog Mist Fog Sleet Smog Mist ANSWER DOWNLOAD EXAMIANS APP
Chemistry In upper layer of atmosphere ozone is formed by 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 The action of ultraviolet rays on oxygen The action of nitrogen on oxygen in atmosphere Subjecting oxygen to high pressure ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following elements is an example of noble gas ? Hydrogen Helium Chlorine Nitrogen Hydrogen Helium Chlorine Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Peptization is a process of Precipitation of colloidal particles Dispersing precipitates into colloidal solution Purification of colloids Protection of colloidal solution Precipitation of colloidal particles Dispersing precipitates into colloidal solution Purification of colloids Protection of colloidal solution ANSWER DOWNLOAD EXAMIANS APP
Chemistry A metal is exposed to the atmosphere for sometime. It becomes coated with green carbonate. The metal must be Aluminium Silver Copper Zinc Aluminium Silver Copper Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry The process which does not evolve CO2 in air is Organic delay Burning Breathing Photosynthesis Organic delay Burning Breathing Photosynthesis ANSWER DOWNLOAD EXAMIANS APP
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