PDF chapter test TRY NOW

8. Hardness of water: think and select the answer

1.

Take a look at the image above and choose the correct answer.

B is rain water and A is river water
B is distilled water and A is rain water
B is sea water and A is distilled water
B is distilled water and A is sea water

2.

When we use this water, the soap becomes ineffective and the clothing become even more damaged.

pond water
distilled water
rain water
All of these
None of these

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