List of top Chemistry Questions on Colloids asked in AP EAPCET

Given below are two statements: Statement I: Animal skin is positively charged and tannin is negatively charged. Statement II: In leather tanning, chromium salts are used in place of tannin.

Milk-water mixture when viewed by the reflected light appears in which colour?

The sol formed in the following unbalanced equation is:
\[ As_2O_3 + H_2S \rightarrow \]

The colloidal solution used to treat stomach disorders is

The correct order of coagulating power of the following ions to coagulate the positive sol is
\[ \text{I. } [Fe(CN)_6]^{4-} \] \[ \text{II. } Cl^{-} \] \[ \text{III. } SO_4^{2-} \]

The macromolecular colloids of the following are
I. Starch solution II. Sulphur sol III. Synthetic detergent IV. Synthetic rubber

Assertion (A): Animal skins are colloidal in nature
Reason (R): Animal skin has positively charged particles.

Which of the following methods are used for the coagulation of lyophobic colloidal solutions?
I. Cooling
II. Electrophoresis
III. Mixing two oppositely charged sols
IV. Dialysis for short duration

Assertion (A): Addition of an excess electrolyte to the colloidal solution leads to the precipitation of colloidal particles.
Reason (R): The charged electrolyte particles neutralises the oppositely charged colloidal particles and promotes coagulation of colloidal sols.

The correct property of colloidal solutions when compared to that of true solutions is:

When a dilute \(AgNO_3\) solution is mixed with excess of dilute \(KI\), the colloidal solution formed is