Consider the following species:
     
What is the hybridization of the carbon carrying a negative charge in structures (I) and (II), respectively?
1. sp2 and sp2 2. sp2 and sp3
3. sp and sp2 4. sp3 and sp3
Subtopic:  Hybridisation & Structure of Carbon Compounds |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Total number of substituents present in the following compound are:
1. 4 2. 5
3. 7 4. 3
Subtopic:  Nomenclature |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

What is correct about the following structure?


1. Total stereoisomers =4
2. Number of chiral carbons =1 
3. Number of optical isomers =2 
4. Number of meso compounds= 2
Subtopic:  Stereo Isomers |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

How many geometrical isomers are possible for a compound with the molecular formula \(\mathrm{C_2BrClFI}\)?

1. 3
2. 4
3. 5 
4. 6
Subtopic:  Stereo Isomers |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Consider the following statements 
a. In crystallization, an impure compound is dissolved in a solvent in which it is highly soluble at room temperature. 
b. In the positive resonance effect(+R), the transfer of electrons is always from an atom or substituted group attached to the conjugated system. 
c. One of the technological applications of fractional distillation is to separate different fractions of crude oil in the petroleum industry.
The correct statements are: 
1. (a) and (b) only  2. (b) and (c) only 
3. (a) and (c) only  4. (a), (b), and (c) 
Subtopic:  Electron Displacement Effects |
 50%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

The correct arrangement of the following carbocations in decreasing order of their stability is:



1. A > B > C > D
2. B > C > A > D
3. C > B > A > D
4. C > A > B > D
Subtopic:  Electron Displacement Effects |
 55%
From NCERT
JEE
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

The hyperconjugation effect is not observed in: 
 
(i) (ii)       
(iii) (iv)

1. (i) and (ii)
2. (i), (ii) and (iii)
3. (i) only 
4. (i), (ii) and (iv) 
Subtopic:  Electron Displacement Effects |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Consider the resonance structure of CH3COOCHas follows:



The correct statement among the following is-

1. I and II cannot be the major contributors to the real structure of CH3COOCH3
2. I and II can be the major contributors to the real structure of CH3COOCH3
3. I is more stable than II.
4. None of the above
Subtopic:  Electron Displacement Effects |
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital

 

In the above compound, at which bond proton H+ attack fastest?

1. A

2. B

3. C

4. D

Subtopic:  Acidic & Basic Character |
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital

advertisementadvertisement

What is the correct order of stability for the following carbanions?
1.  2. 
3.  4. 
      

1.  (1) > (2) > (3) > (4)

2.  (2) > (3) > (4) > (1)

3.  (4) > (2) > (3) > (1)

4.  (1) > (3) > (2) > (4)

Subtopic:  Reaction Intermediates ; Preparation & Properties |
From NCERT
AIPMT - 2008
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital