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JEE Main 202228 JuneEvening Shift
Exam
JEE Main
Year
2022
Date
28 June
Shift
Evening Shift
Subject
Chemistry
Chapter
Surface Chemistry

JEE Main 2022 · 28 June · Evening Shift · Chemistry · Surface Chemistry

Match List-I with List-II List-I List-II (A) negatively charged sol...

Match List-I with List-II

List-I List-II
(A) negatively charged sol (I) Fe2O3⋅xH2O{Fe}_{2}{O}_{3} \cdot {xH}_{2}O
(B) macromolecular colloid (II) CdSCdS sol
(C) positively charged sol (III) Starch
(D) Cheese (IV) a gel

Choose the correct answer from the options given below

Options

  1. A(A)−(II),(B)−(III),(C)−(IV),(D)−(I)\left(A\right) - \left(II\right), \left(B\right) - \left(III\right), \left(C\right) - \left(IV\right), \left(D\right) - \left(I\right)
  2. B(A)−(II),(B)−(I),(C)−(II),(D)−(IV)\left(A\right) - \left(II\right), \left(B\right) - \left(I\right), \left(C\right) - \left(II\right), \left(D\right) - \left(IV\right)
  3. C(A)−(II),(B)−(III),(C)−(I),(D)−(IV)\left(A\right) - \left(II\right), \left(B\right) - \left(III\right), \left(C\right) - \left(I\right), \left(D\right) - \left(IV\right)
  4. D(A)−(I),(B)−(III),(C)−(II),(D)−(IV)\left(A\right) - \left(I\right), \left(B\right) - \left(III\right), \left(C\right) - \left(II\right), \left(D\right) - \left(IV\right)

Correct answer

C. (A)−(II),(B)−(III),(C)−(I),(D)−(IV)\left(A\right) - \left(II\right), \left(B\right) - \left(III\right), \left(C\right) - \left(I\right), \left(D\right) - \left(IV\right)

Step-by-step solution

Colloidal particles always carry an electric charge. The nature of this charge is the same on all the particles in a given colloidal solution and may be either positive or negative.

Negatively charged sol ⇒CdS⇒ CdS

Positively charged sol ⇒Fe2O3.xH2O⇒ {Fe}_{2}{O}_{3} . {xH}_{2}O

Macromolecular colloids are individual particles that are large enough to be considered colloids (diameter around 100 nm). These particles are made up of chemicals with a high molecular weight.

Macromolecular colloid ⇒⇒Starch

Gel ⇒⇒ Cheese

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