Chemistry Copper is refined by Electrolysis Roasting Zone refining Oxidation Electrolysis Roasting Zone refining Oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals is used to galvanise iron ? Mercury Copper Lead Zinc Mercury Copper Lead Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is also known as solution ? A homogeneous mixture A suspension A heterogeneous mixture A compound A homogeneous mixture A suspension A heterogeneous mixture A compound ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following group of gases contributes to the 'Green House Effect'? Ammonia and Ozone Carbon dioxide and Methane Carbon monoxide and Sulphur dioxide Carbon tetraflouride and Nitrous oxide Ammonia and Ozone Carbon dioxide and Methane Carbon monoxide and Sulphur dioxide Carbon tetraflouride and Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ultra purification of a metal is done by : Smelting Zone melting Leaching Slugging Smelting Zone melting Leaching Slugging 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
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