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The gas we use in the kitchen is called liquified petroleum gas (LPG). In the cylinder, it exists as a liquid. When it comes out from the cylinder it becomes a gas (Change - A) then it burns (Change - B). The following statements pertain to these changes. Choose the correct one.(i) Process - A is a chemical change.(ii) Process - B is a chemical change.(iii) Both processes A and B are chemical changes.(iv) None of these processes is a chemical change.2. Anaerobic bacteria digest animal waste and produce biogas (Change - A). The biogas is then burnt as fuel (Change - B). The following statements pertain to these changes. Choose the correct one.(i) Process - A is a chemical change.(ii) Process - B is a chemical change.
Ans-1. Option- (ii), Process - B is a chemical change.
Ans-2. Option- (i), Process A is a Chemical change.
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