Geeta took three water samples in test tubes A, B and C. She added soap solution to all the three test tubes.
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
5 views