Which of the following statements are correct? a. Mixing two oppo… - Vidyadip

MCQ

Which of the following statements are correct?
$a.$ Mixing two oppositely charged sols neutralises their charges and stabilises the colloid.
$b.$ Presence of equal and similar charges on colloidal particles provides stability to the colloids.
$c.$ Any amount of dispersed liquid can be added to emulsion without destabilising it.
$d.$ Brownian movement stabilises sols.

A
$a$ and $b$
B
$b$ and $c$
C
$a$ and $c$
✓
$b$ and $d$

✓

Answer

Correct option: D.

$b$ and $d$

Presence of equal and similar charges on colloidal particles provides stability to colloids as repulsive forces between charge particles having same charge prevent them from colliding when they come closer to each other.

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