1
MHT CET 2024 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the ratio of concentration of salt to concentration of weak acid in buffer solution to maintain its pH value $7.2\left(\mathrm{pK}_{\mathrm{a}}=6.2\right)$.

A
1.5
B
10.0
C
5.0
D
8.5
2
MHT CET 2024 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the value of pOH if a buffer solution is prepared by mixing equal volumes of $0.4 \mathrm{~M} \mathrm{~NH}_4 \mathrm{OH}$ and $0.5 \mathrm{~M} \mathrm{~NH}_4 \mathrm{Cl}$ solutions. $\left(\mathrm{pK}_{\mathrm{b}}=4.730\right)$

A
6.0
B
4.83
C
10.42
D
7.81
3
MHT CET 2024 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following salt solutions turns red litmus blue?

A
$\mathrm{NH}_4 \mathrm{CN}$
B
$\mathrm{NH}_4 \mathrm{Cl}$
C
$\mathrm{NH}_4 \mathrm{NO}_3$
D
$\mathrm{NaNO}_3$
4
MHT CET 2023 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The solubility product of $$\mathrm{PbCl}_2$$ at $$298 \mathrm{~K}$$ is $$3.2 \times 10^{-5}$$. What is its solubility in $$\mathrm{mol} \mathrm{dm}{ }^{-3}$$ ?

A
$$8 \times 10^{-6}$$
B
$$2 \times 10^{-2}$$
C
$$5.6 \times 10^{-3}$$
D
$$5.0 \times 10^{-2}$$
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