Chemistry - Easy question

anpanman SG

Solder is a mixture of lead (melting point 328 deg cel) and tin (melting point 232 deg cel). It is used to join metal surfaces together. Which statement about a solder is correct?

A It boils at 328 deg cel

B It melts at 232 deg cel

C On heating , the tin will melt at 232 deg cel while lead will melt at 328 deg cel

D Tin and lead can be separated by fractional distillation

Ans: D. I seriously doubt the answer. Isn't fractional distillation used to separate 2 or more miscible liquids with different boiling points? However tin and lead are solids at room temperature. All the answers should be invalid. What's your take?

lianamaster SG

I believe they are talking about molten lead and tin? At high temperatures, they melt and can be separated using fractional distillation.

SBS2601D SG

Fractional distillation may not just take place at room temperature.

Can you separate salt and water at room temperature? Yes.

Can you separate salt and water at boiling point? Yes.

You should get the picture.

[email protected]_F3V3R SG

u v. weird one leh..

easy qn still ask here