1
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which among the following amines has highest value of $$\mathrm{pK}_{\mathrm{b}}$$ ?

A
$$\left(\mathrm{CH}_3\right)_2 \mathrm{NH}$$
B
$$\left(\mathrm{CH}_3\right)_3 \mathrm{N}$$
C
$$\mathrm{CH}_3 \mathrm{NH}_2$$
D
$$\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2$$
2
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is vapour pressure of a solution containing $$1 \mathrm{~mol}$$ of a nonvolatile solute in $$36 \mathrm{~g}$$ of water $$\left(\mathrm{P}_1^0=32 \mathrm{~mm} \mathrm{~Hg}\right)$$ ?

A
$$8.14 \mathrm{~mm} \mathrm{~Hg}$$
B
$$12.31 \mathrm{~mm} \mathrm{~Hg}$$
C
$$16.08 \mathrm{~mm} \mathrm{~Hg}$$
D
$$21.44 \mathrm{~mm} \mathrm{~Hg}$$
3
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify the product obtained when phenol is reacted with dilute nitric acid at low temperature.

A
ortho-Nitrophenol
B
para-Nitrophenol
C
Mixture of ortho and para-nitrophenols
D
2,4,6-Trinitrophenol
4
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

For an elementary reaction

$$2 \mathrm{~A}+\mathrm{B} \longrightarrow 3 \mathrm{C}$$

rate of appearance of $$\mathrm{C}$$ is $$1.3 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$$, the rate of disappearance of $$\mathrm{A}$$ is:

A
$$1.3 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$$
B
$$2.6 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$$
C
$$5.2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$$
D
$$8.66 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$$
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