6. The values of p, q, r and s in the balanced chemical equation: pBaCl2 + q A12 (SO4)3AlCl3 + s BaSO4 are respectively

(a) 3, 2, 2, 3 (b) 3, 1, 2, 3

(c) 2, 4, 2, 3 (d) 3, 1, 3,2

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

the answer is c. nacl

the correct answer to this question is 2