1
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following gas has high percentage by volume in air?

A

$\quad \mathrm{O}_2$

B

$\mathrm{N}_2$

C

$\quad \mathrm{CO}_2$

D

Ar

2
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

The rate law for the reaction, $x \mathrm{~A}+y \mathrm{~B} \longrightarrow \mathrm{mP}+\mathrm{nQ}$, is $\mathrm{r}=\mathrm{k}[\mathrm{A}]^{\mathrm{c}} \times[\mathrm{B}]^{\mathrm{d}}$ What is the overall order of reaction?

A

$(x+y)$

B

$(m+n)$

C

$(\mathrm{c}+\mathrm{d})$

D

$\frac{x}{y}$

3
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the molal elevation constant of water if boiling point of 0.7 m solution of non volatile solute is 373.5 K .

[Boiling point of water $=373.15 \mathrm{~K}$ ]

A

$0.4 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$

B

$0.25 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$

C

$0.5 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$

D

$0.60 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$

4
MHT CET (PCB) 2025 9th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the work done in following reaction.

$$ \begin{aligned} & \mathrm{C}_2 \mathrm{H}_{4(\mathrm{~g})}+\mathrm{HCl}_{(\mathrm{g})} \longrightarrow \mathrm{C}_2 \mathrm{H}_5 \mathrm{Cl}_{(\mathrm{g})} \text { at } 27^{\circ} \mathrm{C} . \\ & \left(\mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right) \end{aligned} $$

A

$\quad 4988.4 \mathrm{~J}$

B

$\quad-1247.1 \mathrm{~J}$

C

2494.2 J

D

3741.3 J