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11. 270 centimetres
2700 millimetres
When coal tar is heated, it melts to form a thick black liquid. The melting of coal tar on heating, is a reversible change because when hot, molten coal tar gets cooled, it solidifies again.
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The total weight of a bag containing 10kg 750g of onions and 4kg 50g of tomatoes is 15kg 200g. How much is the weight of the empty bag ?
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