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1
AP EAPCET 2025 - 26th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Choose the incorrect statement from the following.

A

Brownian movement and Tyndall effect are shown by colloidal systems.

B

Hardy-Schulze rule is related with coagulation.

C

Gold number is a measure of the protection power of a lyophilic colloid.

D

Aerosol is a colloidal system in which gas is dispersed in liquid.

2
AP EAPCET 2025 - 26th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following statements regarding adsorption theory of heterogeneous catalysis is not correct ?

A

The reactant molecules get adsorbed on the surface of the catalyst.

B

The chemical reaction occurs at the surface of the catalyst.

C

The product molecules remains permanently bound to the catalyst surface.

D

The catalyst remains unchanged in mass and chemical composition at the end of the reaction.

3
AP EAPCET 2025 - 27th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Match the following

$$
\text { List-I (Reaction) }
$$		 $$
\text { List-II (Catalyst) }
$$
(A) Hydrogenation of vegetable oils I. Ni
(B) Decomposition of potassium chlorate II. $\mathrm{MnO}_2$
(C) Oxidation of $\mathrm{SO}_2$ in lead chamber process III. Pt
(D) Oxidation of ammonia in Ostwald's process (IV) $\mathrm{NO}(g)$
The correct answer is
A

A-II, B-IV, C-I, D-III

B

A-I, B-II, C-IV, D-III

C

A-III, B-IV, C-I, D-II

D

A-III, B-II, C-IV, D-I

4
AP EAPCET 2025 - 27th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The critical micelle concentration (CMC) of a soap solution is $5 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$. Identify the correct statements about this solution.

I. The micelle is stable if the soap solution concentration is $10^{-7} \mathrm{~mol} \mathrm{~L}^{-1}$.

II. The micelle is stable if the soap solution concentration is higher than $5 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$.

III. Micelles are also known as associated colloids.

A

I, II and III

B

I and II only

C

I and III only

D

II and III only

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