Question

The melting point of two substances A and B are 280 K and 320 K respectively. Are these substances liquid at room temperature? Justify your answer.

Answer 1

Average room temperature is 298k.
So if the melting point of substance is below 298k then it is liquid and if the melting point of substance is above 298k then it is solid.
So Substance A would be liquid and B would be Solid.