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

Given below are 4 reactions. Two of these reactions will give product which is an equimolar mixture of the d and 1 forms. Identify these 2 reactions.

[A] 2- Methylpropene + $$\mathrm{HI} \rightarrow$$ ---------

[B] But-1-ene + $$\mathrm{HBr} \rightarrow$$ -----------

[C] 3-Methylbut-1-ene + $$\mathrm{HI} \rightarrow$$ -----------

[D] 3- Phenylpropene + $$\mathrm{HBr}$$ (Peroxide) $$\rightarrow$$ -----------

A
C & A
B
D & B
C
B & C
D
A & D
2
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

$$200 \mathrm{ml}$$ of an aqueous solution contains $$3.6 \mathrm{~g}$$ of Glucose and $$1.2 \mathrm{~g}$$ of Urea maintained at a temperature equal to $$27^{\circ} \mathrm{C}$$. What is the Osmotic pressure of the solution in atmosphere units?

$$\mathrm{R}=0.082 \mathrm{~L} \mathrm{~atm} \mathrm{~K}{ }^{-1} \mathrm{~mol}^{-1}$$ : Molecular Formula: Glucose is $$\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6$$ and of Urea is $$\mathrm{NH}_2 \mathrm{CONH}_2$$

A
6.24
B
1.56
C
9.84
D
4.92
3
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The following data was recorded for the decomposition of XY compound at 750K

[XY] mol / L Rate of decomposition of XY mol / L s
0.4 $$5.5\times10^{-7}$$
0.8 $$22.0\times10^{-7}$$
1.2 $$49.5\times10^{-7}$$

What is the order of reaction with respect to decomposition of XY?

A
0
B
2
C
1
D
1.5
4
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the final product $$[\mathrm{D}]$$ formed when Benzyl alcohol undergoes the following series of reactions

$$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{OH}+\mathrm{SOCl}_2 \rightarrow[\mathrm{A}]+\mathrm{KCN} \rightarrow[\mathrm{B}]+\mathrm{H}_3 \mathrm{O}^{+} \text {(partial hydrolysis) } \rightarrow[\mathrm{C}]+\mathrm{H}_3 \mathrm{O}^{+} \text {(complete hydrolysis) } \rightarrow[\mathrm{D}]$$

A
4-Chlorobenzoic acid
B
Benzoic acid
C
2-Chlorobenzoic acid
D
2-Phenylethanoic acid
EXAM MAP