Direction: Study the given graph carefully and answer the following question. What is represented by straight lines QR and ST in the graph?

Temperature remains same during the change of state.

OR represents latent heat of fusion, while ST represents latent heat of vaporisation.

At QR, matter exists in both solid and liquid states, while at ST matter exists in both liquid and gaseous states.

Direction: Study the given graph carefully and answer the following qu

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.

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Direction: Study the given graph carefully and answer the following question. What is represented by straight lines QR and ST in the graph?

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