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| 1. |
Geeta took three water samples in test tubes A, B and C. She added soap solution to all the three test tubes. She observed lather in testtube A and B and no lather in test-tube C. The correct conclusion is ______.(A) C is soft water(B) B is hard water(C) A is hard water(D) Both A and B are soft water |
| Answer» (D) Both A and B are soft water | |