Chemistry Spontaneous change is one in there is: A lowering of free energy A lowering of entropy An increase in Internal energy Increase in free energy A lowering of free energy A lowering of entropy An increase in Internal energy Increase in free energy ANSWER DOWNLOAD EXAMIANS APP
Chemistry Choose the incorrect statement pertaining to organic compounds They contain mainly carbon and hydrogen They have low melting and boiling points They are not easily combustible They do not dissolve in water They contain mainly carbon and hydrogen They have low melting and boiling points They are not easily combustible They do not dissolve in water ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following causes the rusting of iron? a. Oxidation b. Reduction c. Chemical reaction with oxygend. Chemical reaction with CO2 A and c A and b C and d B and c A and c A and b C and d B and c ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a method of preparing oxygen? Fractional distillation of liquid air Decomposition of potassium permanganate Decomposition of manganese dioxide Electrolysis of water Fractional distillation of liquid air Decomposition of potassium permanganate Decomposition of manganese dioxide Electrolysis of water ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not an addition polymer PVC Nylon Polystyrene Polythene PVC Nylon Polystyrene Polythene ANSWER DOWNLOAD EXAMIANS APP
Chemistry A metal is exposed to the atmosphere for sometime. It becomes coated with green carbonate. The metal must be Silver Zinc Copper Aluminium Silver Zinc Copper Aluminium ANSWER DOWNLOAD EXAMIANS APP
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