Which statements about the treatment of domestic water supplies are correct
CHEMISTRY · Single correct · GCSE · Chemistry · Using Resources · Using Resources
Problem
Which statements about the treatment of domestic water supplies are correct?
1 The water undergoes sedimentation to remove dissolved solids.
2 The water is filtered to remove insoluble solids.
3 The water is treated with carbon to improve the taste.
4 The water is chlorinated to decrease the pH.
(A) 1 and 2
(B) 1 and 4
(C) 2 and 3
(D) 3 and 4