Lesson: Changes around us
Started: Tuesday, March 17, 2026 Time : 00:27
Current: Tuesday, March 17, 2026 Time : 00:27

1. Bacteria digestanimal waste and produce biogas. 2.The biogas is then burnt as fuel. Choose the correct statement.

Bacteria digestanimal waste and produce biogas is chemical change

The biogas is then burnt as fuel is chemical change

Bacteria digestanimal waste and produce biogas is chemical change and The biogas is then burnt as fuel are Chemical changes

Both statements are physical changes