1
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

The following results were obtained during study of the reaction $2 \mathrm{NO}(\mathrm{g})+\mathrm{Cl}_2(\mathrm{~g}) \rightarrow 2 \mathrm{NOCl}(\mathrm{g})$. Determine the value of $[\mathrm{X}]$ in $\mathrm{mol} / \mathrm{L}$

Experiment [NO]
mol / L
[Cl$_2$]
mol / L
Initial rate of formation. [NOCl]
mol / L / min
I 0.2 0.2 $6.0 \times 10^{-3}$
II 0.2 0.4 $2.4 \times 10^{-2}$
III 0.4 0.2 $1.2 \times 10^{-2}$
IV X 0.6 $1.35 \times 10^{-1}$

A
$\mathrm{[X]=0.8}$
B
$[\mathrm{X}]=0.3$
C
$\mathrm{[X]=0.4}$
D
$[\mathrm{X}]=0.5$
2
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two statements, One Assertion [ A ] and the other Reason [ R ] are given. Identify the correct option

Assertion $[A]$ : The decreasing order of the acidic character of the following is $B>D>A>C$

COMEDK 2025 Morning Shift Chemistry - Carboxylic Acids and Its Derivatives Question 1 English

Reason $[\mathbf{R}]$ : Fluorine has larger -I effect than Cl and Br .

A
A is correct but R is wrong.
B
Both A and R are correct and R is the correct explanation of A .
C
A is wrong but R is correct.
D
Both A and R are correct but R is not the correct explanation of A .
3
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
The solution of $(x+\log y) d y+y d x=0$ when $y(0)=1$ is
A
$y(x-1+\log y)+1=0$
B
$x y+y \log y+1=0$
C
$x y=y \log y-y-1$
D
$y(x+1+\log y)-1=0$
4
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
The order of the differential equation $\frac{d}{d x}\left[\left(\frac{d y}{d x}\right)^3\right]=0$ is
A
not defined
B
1
C
2
D
3
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