Question

The melting points of four metals at normal pressure are : iron 1530° C Gallium 29.8° C mercury - 39 ° C Gold 1063 ° C among these metals which will take different shapes if kept in a cup and on a plate on a very cold day of December​

Answer 1

Answer:

The melting points of a metals are correct

I think mercury also change the shape

Answer 2

Among these metals, Gallium (MP =29.8°) will take different shapes if kept in a cup and on a plate on a very cold day of December​.

• The melting point of iron and gold are very high as can be seen from the data given.
• In December, the average temperature is around 25-30°C.
• And the melting point of gallium is 29.8°C. Thus, it is around the normal temperature in the daytime.
• Hence, it will melt at the normal temperature on a very cold day in December. So, it can take different shapes if kept in a cup and on a plate.