Question

mixture of smoke particles and fog in air is called

Answer 1

when smoke mixes with fog and is seen in the air it is called smog

Answer 2

One such consequence of air pollution is smog, a combination of smoke and fog which has proven to be very hazardous to health and life, the most recent example being the smog in China, which left the people short of air to inhale. ... It is clear that smog is yet another consequence of air pollution.