Question

choose the correct statements among the following. a. The gas we use in kitchen is in the form of liquid in the cylinder. b. When it comes out from the cylinder, it becomes a gas. This is a chemical change. c.The burning of gas come from the cylinder is a chemical change. Bacteria digest animal waste and produce biogas. This is a physical change. d. The biogas burnt as a fuel is a chemical change.​

Answer 1

Answer:

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