Chemistry The element used for making solar cells is Magnesium Calcium Sodium Silicon Magnesium Calcium Sodium Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Aqueous solution of which of the following is a good conductor of electricity Ammonium acetate Ammonia Glucose Acetic acid Ammonium acetate Ammonia Glucose Acetic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iron rusts quickly in Rain water River water Sea water Distilled water Rain water River water Sea water Distilled water ANSWER DOWNLOAD EXAMIANS APP
Chemistry Surface water is a better source of drinking water because it is poor in Bacteria Algae Dust Arsenic Bacteria Algae Dust Arsenic ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used for filling weather balloons is Nitrogen Hydrogen Air Helium Nitrogen Hydrogen Air Helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ‘Green House effect’ is produced due to the presence of excess amount of Methane Nitrogen dioxide Sulphur dioxide Carbon monoxide Methane Nitrogen dioxide Sulphur dioxide Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
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