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1
MHT CET 2025 19th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the pH of buffer solution prepared by mixing 0.01 M weak acid and 0.02 M salt of weak acid with strong base? $\left(\mathrm{pK}_{\mathrm{a}}=4.680\right)$

A
4.379
B
2.379
C
4.981
D
2.981
2
MHT CET 2025 19th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

If pH of solution changes from 4 to 5 , then the $\mathrm{H}_3 \mathrm{O}^{+}$ion concentration of solution

A
decreases by one times
B
increase by one times
C
increase by 10 times
D
decrease by 10 times
3
MHT CET 2025 19th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
The pH of a sample of vinegar is 3.76. Calculate the concentration of hydrogen ion in it in $\mathrm{mol} \mathrm{dm}^{-3}$ ?
A
$1.97 \times 10^{-4}$
B
$1.738 \times 10^{-4}$
C
$1.84 \times 10^{-4}$
D
$1.283 \times 10^{-4}$
4
MHT CET 2025 19th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
The solubility product of a sparingly soluble salt AX is $4.9 \times 10^{-13}$. What is its solubility in $\mathrm{mol} \mathrm{dm}^{-3}$ ?
A
$2.4 \times 10^{-13}$
B
$4.9 \times 10^{-7}$
C
$7.0 \times 10^{-7}$
D
$7.0 \times 10^{-13}$
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