Class 7 CBSE Chemistry | Chapter - Waste Water Story | Xylem Class 7 CBSE

[@Sumacr-u2q]

Water purify cheyan microbes
Urine illeum microbes ille appo athe purify cheyele plz ans it

[@siniswathi1234]

This class was very helpful. Mam, Can you upload the unit 4 important questions ? pls pls pls mam

[@siniswathi1234]

This class was very helpful. Mam, Can you upload the unit 12 : Forests: Our Lifeline ? pls pls pls mam

[@thasnihashim2538]

Super class

[@baalveerfanpower]

Plss upload important questions

[@Rasiyahashim-75]

Wonderful 🎉🎉 I love the class

[@nandanasurendran6379]

❤

[@Rasiyahashim-75]

Important questions please

[@Rasiyahashim-75]

Soooo good

[@nandanasurendran6379]

❤

[@alfinaibel8077]

Nice class