Question

Define the following terms: a) melting
point b) boiling point c) evaporation

SCERT Class 9 Telangana, Physical Science Chapter 1 Matter Around us

Answer 1

a)The temp. at which the given solid will start to melt.
b)The temp. at which the given liquid will start to boil.
c)The process in which the liquid will change to gaseous state due to the change in temperature.

Answer 2

A. A point at which a solid will start melting n convert into liquid form. B. A pt. at which a liquid will start boiling n change into gaseous state. C. It is a process in which liquid turns into gaseous state or water vapour due to rise in temp.