Hard And Soft Water Jamb Chemistry Past Questions
Question 1
The furring of kettles is caused by the presence of what compound in water?
- A. calcium tetraoxosulphate (IV)
- B. calcium hydrogentrioxocarbonate (IV)
- C. calcium hydroxide
- D. calcium trioxocarbonate (IV)
Question 2
Clothes should be properly rinsed with water after bleaching because
- A. the bleach decolourizes the clothes
- B. chlorine reacts with fabrics during bleaching
- C. the clothes are sterilized during bleaching
- D. hydrogen chloride solution is produced during bleaching
