Chemistry Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water None of these Manganese Magnesium Calcium None of these Manganese Magnesium Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The iron ore magnetite consists of Fe3OH4 FeCO3 3Fe2O3 .. 3H2O Fe2O3 Fe3OH4 FeCO3 3Fe2O3 .. 3H2O Fe2O3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical substance present in bones and teeth is Calcium sulphate Calcium phosphate Calcium borate Calcium chloride Calcium sulphate Calcium phosphate Calcium borate Calcium chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry Bakelite is a co-polymer of Phenol and Acetaldehyde Benzaldehyde Cinnaldehyde Formaldehyde Acetaldehyde Benzaldehyde Cinnaldehyde Formaldehyde ANSWER DOWNLOAD EXAMIANS APP
Chemistry The polymer obtained by the condensation of hexamethylene diamine and adipic acid is : Terylene Tollen's Nylon 66 Bakelite Terylene Tollen's Nylon 66 Bakelite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The minimum energy required for an effective collision is Threshold energy Free energy Activation energy Internal energy Threshold energy Free energy Activation energy Internal energy ANSWER DOWNLOAD EXAMIANS APP
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