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1
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is NOT a correct mathematical equation for Ostwald dilution law?

A
$$\propto=\sqrt{\frac{\mathrm{K}_{\mathrm{a}}}{\mathrm{c}}}$$
B
$$K=\frac{\alpha^2}{V}$$
C
$$\mathrm{K}=\propto^2 \mathrm{c}$$
D
$$\propto=\sqrt{\frac{\mathrm{K}_{\mathrm{a}}}{\mathrm{V}}}$$
2
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A weak monobasic acid is $$10 \%$$ dissociated in $$0.05 \mathrm{~M}$$ solution. What is its percentage dissociation in $$0.10 \mathrm{~M}$$ solution?

A
5.27%
B
7.17%
C
10.3%
D
4.5%
3
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The $$\left[\mathrm{OH}^{-}\right]$$ in a solution is $$1 \times 10^{-12} \mathrm{~mol} \mathrm{~dm}{ }^{-3}$$. What is the concentration of $$\mathrm{H}^{+}$$ ions?

A
$$0.1 \mathrm{~mol} \mathrm{~dm}^{-3}$$
B
$$1.0 \mathrm{~mol} \mathrm{~dm}^{-3}$$
C
$$2.0 \mathrm{~mol} \mathrm{~dm}^{-3}$$
D
$$0.01 \mathrm{~mol} \mathrm{~dm}^{-3}$$
4
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which among the following salt solution in water shows pH greater than 7?

A
Sodium acetate
B
Sodium sulphate
C
Copper sulphate
D
Ammonium chloride
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