Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuSO4 CuO CuCO3 Cu(OH)2 Cu(NO3)2 CuSO4 CuO CuCO3 Cu(OH)2 Cu(NO3)2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal does not give H2 on treatment with dilute HCL is Zn Ag Fe Ca Zn Ag Fe Ca ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following elements is found in all organic compounds Oxygen Calcium Carbon Nitrogen Oxygen Calcium Carbon Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Mark the compound which possess ionic, covalent and coordinate bonds. SO3 NH4Cl H2O SO2 SO3 NH4Cl H2O SO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mineral containing both magnesium and calcium is magnesite calcite dolomite carnallite magnesite calcite dolomite carnallite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is colourless ? Oxygen Phosphorus Sulphur Chlorine Oxygen Phosphorus Sulphur Chlorine ANSWER DOWNLOAD EXAMIANS APP
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