Which of the following statements is NOT correct?
Zinc Oxide is a?
When sodium chloride and metallic sodium are each dissolved in water
The periodic classification of elements is an arrangement of the elements in order of their
In the reaction between sodium hydroxide and sulphuric acid solutions, what volume of 0.5 molar sodium hydroxide would exactly neutralise 10cm3 of 1.25 molar sulphuric acid?