1.

C. Fill in the blanks.1.andare two disinfectants used to purify water.2. Water obtained from sedimentation tank after treatment is called3. Biogas is a mixture ofand4. Usedandshould not be thrown in the drain.​

Answer»

Answer:

1. CHLORINE and bleaching powder

2. Pure WATER

3. METHANE

4. Plastic and BOTTLES



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