Chemistry Solder metal is an alloy of Copper and tin Copper and zinc Lead and antimony Lead and tin Copper and tin Copper and zinc Lead and antimony Lead and tin ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most suitable vessel for storing concentrated sulphuric acid is Copper vessel Earthen vessel Aluminium vessel Glass vessel Copper vessel Earthen vessel Aluminium vessel Glass vessel ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical formula of washing soda is NaHCO3 Na2SO4.10H2O Na2CO3.10H2O Ca(OH)2 NaHCO3 Na2SO4.10H2O Na2CO3.10H2O Ca(OH)2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used for dating very old objects of archaeological importance? Phosphorus-31 Radium Carbon-14 Tritium Phosphorus-31 Radium Carbon-14 Tritium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which method will be employed to test the hardness of water? None of these Boiling Formation of lather with soap Distillation None of these Boiling Formation of lather with soap Distillation ANSWER DOWNLOAD EXAMIANS APP
Chemistry ________ is a by product of sewage treatment and can be decomposed to produce biogas Sludge Sewage Scum Sewer Sludge Sewage Scum Sewer ANSWER DOWNLOAD EXAMIANS APP
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