|
Hard water does not easily produce lather with soap because it contains |
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|
(a) |
Only Mg+2 ions |
(b) |
Only Ca+2 ions |
|
(c) |
both Mg2+ and Ca2+ ions |
(d) |
both Na+ and K+ ions |
|
Hard water does not easily produce lather with soap because it contains |
|||
|
(a) |
Only Mg+2 ions |
(b) |
Only Ca+2 ions |
|
(c) |
both Mg2+ and Ca2+ ions |
(d) |
both Na+ and K+ ions |