Water-A Precious Resource Worksheet-5

Column A

Column B

(A)

 Hard water

(P)

 Human consumption

(B)

 Soft water

(Q)

 Laboratory purpose

(C)

 Potable water

(R)

 Lather formation

(D)

 Distilled water

(S)

 Presence of calcium & magnesium ions

Column A

Column B

(A)

 Lake water

(P)

 Reverse osmosis

(B)

 Desalinated water

(Q)

 Rain water

(C)

 Acidulated water

(R)

 Electrolysis

(D)

 River water

(S)

 Irrigation purposes

Column A

Column B

(A)

 Pure water but unfit for human consumption

(P)

 Potable water

(B)

 Water containing pesticides, unfit for human consumption

(Q)

 Distilled water

(C)

 Water found in the wells

(R)

 Polluted water

(D)

 Water fit for drinking

(S)

 Underground water

Column A

Column B

(A)

 Sedimentation

(P)

 Addition of alum

(B)

 Filtration

(Q)

 Purification of drinking water

(C)

 Chlorination

(R)

 Removal of suspended impurities

(D)

 Permutit

(S)

 Softened water