1
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

The correct order of increasing melting point is

A
$$\mathrm{Cr}<\mathrm{Ti}<\mathrm{V}<\mathrm{Mn}$$
B
$$\mathrm{Mn}<\mathrm{Ti}<\mathrm{V}<\mathrm{Cr}$$
C
$$\mathrm{Ti}<\mathrm{V}<\mathrm{Cr}<\mathrm{Mn}$$
D
$$\mathrm{V}<\mathrm{Ti}<\mathrm{Mn}<\mathrm{Cr}$$
2
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

A solution of $$\mathrm{KCl}(\mathrm{M}=74.5 \mathrm{~g} \mathrm{~mol}^{-1})$$ containing $$1.9 \mathrm{~g}$$ per $$100 \mathrm{~mL}$$ of $$\mathrm{KCl}$$ is isotonic with a solution of urea $$(\mathrm{M}=60.0 \mathrm{~g} \mathrm{~mol}^{-1}$$) containing $$3 \mathrm{~g}$$ per $$100 \mathrm{~mL}$$ of urea. The degree of dissociation of $$\mathrm{KCl}$$ is: [Assume both the solutions are kept at same temperature]

A
0.96
B
0.99
C
0.90
D
0.98
3
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

$$\mathrm{Cu}^{+}$$ undergoes disproportionation, according to the equation,

$$ 2 \mathrm{Cu}^{+} \rightleftharpoons \mathrm{Cu}^{2+}+\mathrm{Cu} $$

The $$\mathrm{E}^{\circ}$$ value for the reaction is:

$$[\mathrm{E}_{\mathrm{Cu}^{2+} / \mathrm{Cu}}^{\mathrm{o}}=0.34 \mathrm{~V} \text { and } \mathrm{E}_{\mathrm{Cu}^{2+} / \mathrm{Cu}^{+}}^{\mathrm{O}}=0.15 \mathrm{~V}]$$

A
$$-0.56$$ V
B
$$-0.49$$ V
C
$$+0.49$$ V
D
$$+0.38$$ V
4
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Arrange the following amines in the decreasing order of their solubilities in water.

COMEDK 2024 Afternoon Shift Chemistry - Compounds Containing Nitrogen Question 3 English

A
III > II > I
B
II > III > I
C
I > II > III
D
I > III > II
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