Saturday , November 28 2020

Science

Wastewater Story: 7th Class NCERT CBSE Science Ch 18

7th Class CBSE Science NCERT Book

Wastewater Story 7th Class NCERT CBSE Science Chapter 18 Question: Wastewater is fit for human consumption or not. Give reason to support your answer. Answer: No, because it is dirty and has many diseases causing organisms like cholera, typhoid etc. Question: Name two chemicals used to disinfect wastewater. Answer: Chlorine and ozone …

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Reproduction in Plants: 7 NCERT CBSE Science Chapter 12

7th Class CBSE Science NCERT Book

Reproduction in Plants 7th Class NCERT CBSE Science Chapter 12 Question: Why is the process of reproduction necessary? Answer: The process of reproduction is necessary for the perpetuation and preservation of species and to increase the number of members of species. Question: If the filament of Spirogyra is broken into fragments. What …

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