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 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the depression in freezing point of an aqueous solution containing a solute, which is neither dissociated nor associated, is $$\mathbf{a} \mathrm{K}$$ with $$\mathrm{K}_{\mathrm{f}}=\mathbf{b ~ K ~ k g ~ m o l}{ }^{-1}$$, what would be the elevation in boiling point $$(\mathrm{X})$$ for this solution if its $$\mathrm{K}_{\mathrm{b}}=\mathbf{\mathrm { ~K } \mathrm { ~K } \mathrm { ~kg } \mathrm { ~mol }}{ }^{-1}$$ ?

A
$$ \mathrm{X}=2 \mathrm{c} \times \frac{b}{a} $$
B
$$ X=c \times \frac{a}{2 b} $$
C
$$ X=c \times \frac{a}{b} $$
D
$$ \mathrm{X}=\mathrm{c} \times \frac{b}{a} $$
2
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

The system that forms maximum boiling azeotropes is

A
acetone-chloroform
B
ethyl alcohol-water
C
benzene-toluene
D
CS$$_2$$ + acetone
3
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

Which of the following does not affect solubility of a gas in liquid?

A
Nature of gas and liquid
B
Pressure
C
Concentration
D
Temperature
4
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

Which among the following forms minimum boiling azeotropes?

(i) Heptane + Octane

(ii) Water + Nitric acid

(iii) Ethanol + Water

(iv) Acetone + Carbon dioxide

A
(i), (ii), (iv)
B
(i), (ii) only
C
(i), (iii), (iv)
D
(iv) only
COMEDK Subjects