Which of the following species does not exert a resonance effect ?
- $C_6H_5NH_2$
- $C_6H_5NH_3$
- $C_6H_5OH$
- $C_6H_5Cl$
The Correct Option is B
Solution and Explanation
Top Questions on Organic Chemistry - Some Basic Principles and Techniques
- Which of the following compounds has the highest boiling point?
- BITSAT - 2025
- Chemistry
- Organic Chemistry - Some Basic Principles and Techniques
- The compound which does not react with ammonical silver nitrate solution is:
- UPCATET - 2025
- Chemistry
- Organic Chemistry - Some Basic Principles and Techniques
- The amine which is most basic in gas phase is:
- UPCATET - 2025
- Chemistry
- Organic Chemistry - Some Basic Principles and Techniques
- Which of the following amines will give most easily \(\mathrm{N}_2\) gas on treatment with \(\mathrm{NaNO}_2 + \mathrm{HCl}\) at 275 K:
- UPCATET - 2025
- Chemistry
- Organic Chemistry - Some Basic Principles and Techniques
- Electrophile used in Kolbe’s reaction is:
- UPCATET - 2025
- Chemistry
- Organic Chemistry - Some Basic Principles and Techniques
Questions Asked in KCET exam
- If the number of terms in the binomial expansion of \((2x + 3)^n\) is 22, then the value of \(n\) is:
- KCET - 2025
- Binomial theorem
You are given a dipole of charge \( +q \) and \( -q \) separated by a distance \( 2l \). A sphere 'A' of radius \( R \) passes through the centre of the dipole as shown below and another sphere 'B' of radius \( 2R \) passes through the charge \( +q \). Then the electric flux through the sphere A is
- KCET - 2025
- Electrostatic potential
- If \(N_2\) gas is bubbled through water at 293 K, how many moles of \(N_2\) gas would dissolve in 1 litre of water? Assume that \(N_2\) exerts a partial pressure of 0.987 bar. [Given \(K_H\) for \(N_2\) at 293 K is 76.48 K bar]
- KCET - 2025
- Gas laws
- A solenoid is 1 m long and 4 cm in diameter. It has five layers of windings of 1000 turns each and carries a current of 7 A. The magnetic field at the centre of the solenoid is
- KCET - 2025
- Magnetic Field
- The derivative of \( \sin x \) with respect to \( \log x \) is:
- KCET - 2025
- Derivatives
Concepts Used:
Organic Chemistry – Some Basic Principles and Techniques - Reaction Mechanism
SN1 Reaction Mechanism:
SN1 reaction mechanism takes place by following three steps –
- Formation of carbocation
- Attack of nucleophile
- Deprotonation
SN2 Reaction Mechanism:
The SN2 reaction mechanism involves the nucleophilic substitution reaction of the leaving group (which generally consists of halide groups or other electron-withdrawing groups) with a nucleophile in a given organic compound.
Electrophilic Aromatic Substitution Reaction Mechanism:
The mechanism of an electrophilic aromatic substitution reaction contains three main components which are:
- A new sigma bond from C=C is formed during the reaction in the arene nucleophile.
- Due to the breaking of the C-H sigma bond, a proton is removed.
- The C=C bond is reformed and it restores the aromaticity of the compound.
Electrophilic Substitution Reaction Mechanism:
The electrophilic substitution reaction mechanism is composed of three steps, which will be discussed more below.
- Electrophile Generation
- Carbocation Formation
- Proton Removal