# The colour of a colloidal solution depends upon

(a) particle size  (b) temperature  (c) the direction in which it is being viewed  (d) both a and c

Answer : both a and c
Explanation :
Colour of a colloidal solution depends upon particle size and also the direction in which it is being viewed . For eg , diluted milk gives a bluish tinge in the reflected light and a reddish tint in the transmitted light .