Question

Which of the following does not have a fixed melting or boiling points A) gold B) ethanol C)air
D) oxygen

Answer 1

Answer:

HI DUDE UR ANSWER IS :

Explanation:

AIR IN THE ATMOSPHERE : BECAUSE IT IS MADE UP OF DIFFERENT CONSTITUENTS WHO HAVE DIFFERENT BOILING POINT.

IT'S ABOVE 4000 KELVIN.

Answer 2

Answer:

C) Air.

Explanation:

So, air has no boiling point and it also has no melting point. Gold is a metal, ethanol is a type of alcohol and oxygen is type of gas which have only atoms of oxygen. Hence, remaining all three have fixed substances and therefore have fixed melting/ boiling point. But air does not.

I hope it helps.

All the best for your work☺.