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 b C and d A and c B and c A and b C and d A and c B and c ANSWER DOWNLOAD EXAMIANS APP
Chemistry A metal is exposed to the atmosphere for sometime. It becomes coated with green carbonate. The metal must be Copper Aluminium Silver Zinc Copper Aluminium Silver Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ? There is no reaction. The paper ignites There is a crackling sound There is a violent explosion. There is no reaction. The paper ignites There is a crackling sound There is a violent explosion. ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element with highest first ionisation energy is Sodium Hydrogen Helium Lithium Sodium Hydrogen Helium Lithium ANSWER DOWNLOAD EXAMIANS APP
Chemistry In galvanization, iron is coated with Copper Zinc Tin Nickel Copper Zinc Tin Nickel ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following elements is used in the manufacture of safety matches? Phosphorus Sodium Graphite Silicon Phosphorus Sodium Graphite Silicon ANSWER DOWNLOAD EXAMIANS APP
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