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1
MHT CET 2024 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The solubility of $\mathrm{CaCO}_3$ is $7 \times 10^{-5} \mathrm{~mol} \mathrm{dm}^{-3}$ at $25^{\circ} \mathrm{C}$. What is its solubility product at same temperature?

A
$6.7 \times 10^{-9}$
B
$9.0 \times 10^{-9}$
C
$1.12 \times 10^{-9}$
D
$4.9 \times 10^{-9}$
2
MHT CET 2024 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which among the following is the conjugate base of $\mathrm{HClO}_4$ ?

A
$\mathrm{ClO}_4^{2-}$
B
$\mathrm{ClO}_4$
C
$\mathrm{HCl}$
D
$\mathrm{ClO}_4^{-}$
3
MHT CET 2024 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is pH of a centimolar solution of $\mathrm{H}_2 \mathrm{SO}_4$ ?

A
1.7
B
2.0
C
3.2
D
4.5
4
MHT CET 2024 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A buffer solution is prepared by mixing 0.01 M HCN and 0.02 MNaCN . If $\mathrm{K}_{\mathrm{a}}$ for HCN is $6.6 \times 10^{-10}$, what is the concentration of $\mathrm{H}^{+}$ions in solution?

A
$3.3 \times 10^{-6} \mathrm{M}$
B
$3.3 \times 10^{-10} \mathrm{M}$
C
$1.32 \times 10^{-6} \mathrm{M}$
D
$1.32 \times 10^{-10} \mathrm{M}$
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