Chemistry Heating of a ore below its melting point in the absence of air is known as Smelting Roasting Refining Calcination Smelting Roasting Refining Calcination ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas causing acid rain in an industrial area is Sulphur dioxide Methane Carbon monoxide Carbon dioxide Sulphur dioxide Methane Carbon monoxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Normal rainwater has a pH level of 8.3 6.3 5.6 3.2 8.3 6.3 5.6 3.2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Carbon dioxide Carbon monoxide Ozone Water vapour Carbon dioxide Carbon monoxide Ozone Water vapour 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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