"Colloids are thermodynamically unstable with reference to bulk but kinetically stable". Identify the correct pair
Statements
Reasons
(A) thermodynamically unstable
(C) interfacial surface tension
(B) kinetically stable
(D) electrical double layer
(a)(A) $\leftrightarrow$ (D) and (B) $\leftrightarrow$ (C)
(c)(A) $\leftrightarrow$ (C) and (B) $\leftrightarrow$ (C)
(b)(A) $\leftrightarrow$ (C) and (B) $\leftrightarrow$ (D)
(d)(A) $\leftrightarrow$ (D) and (B) $\leftrightarrow$ (D)
Answer
Answer (as printed): B
Explanation
With reference to bulk, colloids are thermodynamically unstable but kinetically stable, because interfacial surface tension makes a colloid thermodynamically unstable, and the electrical double layer makes a colloid kinetically stable.