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The answer for this question is (4) but I’m not sure on how to explain the reason behind the said answer. Does anyone knows the reason behind it?


solid at 40 degrees C ——-> melting point > 40 degrees C ——-> 50 degrees C

liquid at 220 degrees C ——-> boiling point > 220 degrees C ——-> 250 degrees C

Thus, answer is (4).

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For this kind of question, it helps to draw a line and label various states on the line.

Then remembering that melting is when solid turns to liquid, and boiling point is when liquid turns to gas, you can label them accordingly on the same line.

You can then see that melting point is between 40ºC and 220ºC, and boiling point is higher than 220ºC.

Hence, answer is (4)

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