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# The solubility of various substances increases with the increase in temperature. The variation in the solubilities of $K_2CO_3$ and $KNO_3$ in water with temperature is represented in the given graph.In the solubility curve of $K_2CO_3$, the approximate amount of $K_2CO_3$ dissolved in 1kg of water at 50°C will be between

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A)
1 200 g to 1 300 g
Hence (C) is the correct answer.