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1. |
Direction: Study the given graph carefully and answer the following question. What is represented by straight lines QR and ST in the graph? |
A. | Temperature remains same during the change of state. |
B. | OR represents latent heat of fusion, while ST represents latent heat of vaporisation. |
C. | At QR, matter exists in both solid and liquid states, while at ST matter exists in both liquid and gaseous states. |
D. | All of these. |
Answer» E. | |