Physical Chemistry
Some Basic Concepts of Chemistry
MCQ (Single Correct Answer)
Chemical Equilibrium
MCQ (Single Correct Answer)
Inorganic Chemistry
Periodic Table and Periodicity
MCQ (Single Correct Answer)
Chemical Bonding and Molecular Structure
MCQ (Single Correct Answer)
Hydrogen and It's Compounds
MCQ (Single Correct Answer)
d and f Block Elements
MCQ (Single Correct Answer)
Coordination Compounds
MCQ (Single Correct Answer)
Environmental Chemistry
MCQ (Single Correct Answer)
Organic Chemistry
IUPAC Nomenclatures
MCQ (Single Correct Answer)
General Organic Chemistry
MCQ (Single Correct Answer)
Haloalkanes and Haloarenes
MCQ (Single Correct Answer)
Alcohol, Phenols and Ethers
MCQ (Single Correct Answer)
Aldehyde and Ketone
MCQ (Single Correct Answer)
Carboxylic Acids and Its Derivatives
MCQ (Single Correct Answer)
Compounds Containing Nitrogen
MCQ (Single Correct Answer)
Chemistry in Everyday Life
MCQ (Single Correct Answer)
Practical Organic Chemistry
MCQ (Single Correct Answer)
1
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
2
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

An aqueous solution of glucose boils at $$100.01^{\circ} \mathrm{C}$$. The number of glucose molecules in a solution containing $$100 \mathrm{~g}$$ of water is _________ [$$\mathrm{K}_{\mathrm{b}}$$ for water is $$0.5 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$$]

A
$$ 6.022 \times 10^{21} $$
B
$$ 1.204 \times 10^{21} $$
C
$$ 1.204 \times 10^{23} $$
D
$$ 6.022 \times 10^{23} $$
3
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

The system that forms minimum boiling azeotrope is :

A
Phenol-Aniline
B
Ethyl alcohol - Water
C
Acetone-Chloroform
D
Nitric Acid - Water
4
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
COMEDK Subjects