Q. Which of the following reactions lead to the formation of colloidal solution?
A) $Cu + {HgCl}_{2} \rightarrow {CuCl}_{2} + Hg$
B) $2{HNO}_{3} + 3H_{2}S \rightarrow 3S + H_{2}O + 2NO$
C) $2Mg + {CO}_{2} \rightarrow 2MgO + C$
D) $Cu + {CuCl}_{2} \rightarrow 2CuCl$
Explanation
(b)
$2{HNO}_{3} + 3H_{2}S \rightarrow 3S + H_{2}O + 2NO$
This equation is used for the preparation of sulphur sol
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.