Question

Which among the following is a chemical change?; 1) A wet towel dries in the sun; 2) Lemon juice added to tea causing its colour to change; 3) Coffee is brewed by passing steam through ground coffee; 4) Hot air rises over a radiator

Answer 1

2)Lemon juice added to tea causing it's colour to change

Answer 2

2) Lemon juice added to tea causing its colour to change;

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2) Lemon juice added to tea causing its colour to change; is an example for chemical change