1
AP EAPCET 2025 - 23rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Adsorption of a gas on solids follows Freundlich adsorption isotherm. The graph drawn between $\log \frac{x}{m}$ (on $y$-axis) and $\log p$ (on $x$-axis) is a straight line with slope equal to 3 and intercept equal to 0.30 . What is the value of $\frac{x}{m}$ at a pressure of 2 atm ?

(Given: $\log 2=0.3$ )

A

48

B

32

C

16

D

8

2
AP EAPCET 2025 - 23rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following reactions is an example of roasting?

A

$\mathrm{ZnCO}_3 \longrightarrow \mathrm{ZnO}+\mathrm{CO}_2$

B

$2 \mathrm{PbS}+3 \mathrm{O}_2 \longrightarrow 2 \mathrm{PbO}+2 \mathrm{SO}_2$

C

$\mathrm{Fe}_2 \mathrm{O}_3+3 \mathrm{C} \longrightarrow 2 \mathrm{Fe}+3 \mathrm{CO}$

D

$\mathrm{FeO}+\mathrm{SiO}_2 \longrightarrow \mathrm{FeSiO}_3$

3
AP EAPCET 2025 - 23rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Nature of two oxides of nitrogen $X$ and $Y$ formed in the reaction of sodium nitrite with hydrochloric acid is

A

Both $X$ and $Y$ are acidic in nature

B

$X$ is acidic and $Y$ is neutral in nature

C

Both $X$ and $Y$ are neutral in nature

D

$X$ is amphoteric and $Y$ is neutral in nature

4
AP EAPCET 2025 - 23rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

$$ \text { Match the following } $$

$$ \begin{array}{cccc} \hline & \begin{array}{c} \text { List-I } \\ \text { (Transition metal, M) } \end{array} & & \begin{array}{c} \text { List-II } \\ \left(E_{M^{2+} / M}^{\ominus}\right) \end{array} \\ \hline \text { (A) } & \mathrm{Ni} & \text { (I) } & -1.18 \\ \hline \text { (B) } & \mathrm{Mn} & \text { (II) } & -0.91 \\ \hline \text { (C) } & \mathrm{Fe} & \text { (III) } & -0.25 \\ \hline \text { (D) } & \mathrm{Cr} & \text { (IV) } & -0.44 \\ \hline \end{array} $$

The correct answer is

A

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

B

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

C

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

D

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