Question

David left a cup of hot coffee on his table. He noticed something rising out of the surface of the coffee. Which of the following describes correctly how the particles are arranged at P and Q?

Particles at P	Particles at Q
(A) not so closely packed	Far apart
(B) far apart	Closely packed
(C) not so closely packed	Closely packed
(D) far apart	Not so closely packed

Answer 1

particles P are vapours which are in a gaseous state, and particles Q is liquid.

The particles of vapours P are far apart and particles Q are not so closely packed.

So, particles P are far apart, Q is not so closely packed.