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Question 12 Which of the following changes cannot be reversed? Blowing of a ballon Folding a paper to make a toy aeroplane Rolling a ball of dough to make roti Baking cake in an oven Drying a wet cloth Making biogas from cow dung Burning of a candle

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Question 12

Which of the following changes cannot be reversed?
Blowing of a ballon
Folding a paper to make a toy aeroplane
Rolling a ball of dough to make roti
Baking cake in an oven
Drying a wet cloth
Making biogas from cow dung
Burning of a candle



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