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

Select the strongest base from the given compounds:

[A] p- $$\mathrm{NO}_2-\mathrm{C}_6 \mathrm{H}_4 \mathrm{NH}_2$$

[B] $$\mathrm{C}_6 \mathrm{H}_5-\mathrm{CH}_2-\mathrm{NH}_2$$

[C] $$\mathrm{m}-\mathrm{NO}_2-\mathrm{C}_6 \mathrm{H}_4 \mathrm{NH}_2$$

[D] $$\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2$$

A
[A]
B
[C]
C
[B]
D
[D]
2
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following statements is correct?

A
The order of stability of Carbanions is $$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2^{-}<\left(\mathrm{C}_6 \mathrm{H}_5\right)_2 \mathrm{CH}^{-}<\left(\mathrm{C}_6 \mathrm{H}_5\right)_3 \mathrm{C}^{-}$$
B
In $$\mathrm{CH}_3{ }^{+}$$, Carbon carrying positive charge is $$\mathrm{sp}^3$$ hybridised.
C
In $$\mathrm{CH}_3^{-}$$, Carbon carrying negative charge is $$\mathrm{sp}^2$$ hybridised.
D
The order of stability of Carbocations is $$(\mathrm{C}_6 \mathrm{H}_5)_3 \mathrm{C}^{+}<(\mathrm{C}_6 \mathrm{H}_5)_2 \mathrm{CH}^{+}<\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2^{+}$$
3
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Arrange stability of the given carbon cation in decreasing order

COMEDK 2021 Chemistry - General Organic Chemistry Question 11 English

A
(iii) > (ii) > (i) > (iv)
B
(i) > (ii) > (iii) > (iv)
C
(iii) > (i) > (ii) > (iv)
D
(ii) > (iii) > (i) > (iv)
4
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

+I-effect is shown by

A
$$-$$NO$$_2$$
B
$$-$$Cl
C
$$-$$Br
D
$$-$$CH$$_3$$
COMEDK Subjects