Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuSO4 Cu(NO3)2 CuO CuCO3 Cu(OH)2 CuSO4 Cu(NO3)2 CuO CuCO3 Cu(OH)2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The influence of temperature on reaction rate is predicted by Kirchhoff's equation Arrhenius equation Van der Waals equation Lewis equation Kirchhoff's equation Arrhenius equation Van der Waals equation Lewis equation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Oxygen which is vital for life is a product of photosynthesis and comes from Carbon dioxide Carbonates from soil Water Oxides of mineral elements Carbon dioxide Carbonates from soil Water Oxides of mineral elements ANSWER DOWNLOAD EXAMIANS APP
Chemistry Gypsum is used for improvement of: Acidic soils Saline soils Podsols Alkaline soils Acidic soils Saline soils Podsols Alkaline soils ANSWER DOWNLOAD EXAMIANS APP
Chemistry Acid rain is caused by NO2and particulates SO2 and NO2 CO2and CFCs SO2 and particulates NO2and particulates SO2 and NO2 CO2and CFCs SO2 and particulates ANSWER DOWNLOAD EXAMIANS APP
Chemistry When quick lime is added to water Heat is liberated Temperature decreases No heat change takes place Heat is absorbed Heat is liberated Temperature decreases No heat change takes place Heat is absorbed ANSWER DOWNLOAD EXAMIANS APP
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