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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 5 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$$_3$$
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