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

Solubility of $\mathrm{Mg}(\mathrm{OH})_2$ is ' S ' $\mathrm{mol} / \mathrm{dm}^3$ its solubility product is equal to

A

$\mathrm{S}^2$

B

$27 \mathrm{~S}^4$

C

$4 \mathrm{~S}^3$

D

$4 \mathrm{~S}^2$

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

Identify the compound from following so that Ostwald's dilution law is NOT applicable to it.

A

NaOH

B

$\mathrm{NH}_4 \mathrm{OH}$

C

$\mathrm{H}_2 \mathrm{CO}_3$

D

$\mathrm{H}_2 \mathrm{~S}$

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

At 298 K pH of a solution is 13 . What is the number of $\mathrm{H}_3 \mathrm{O}^{+}$ions present in one mL of this solution?

A

$6.022 \times 10^7$

B

$5.020 \times 10^8$

C

$7.022 \times 10^{13}$

D

$1 \times 10^{13}$

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

The solubility product of $\mathrm{PbI}_2$ is $2.8 \times 10^{-8}$. Calculate its solubility in $\mathrm{mol} \mathrm{dm}^{-3}$.

A

$1.323 \times 10^{-3}$

B

$1.912 \times 10^{-3}$

C

$7.912 \times 10^{-3}$

D

$7.323 \times 10^{-23}$

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