Halogenation of which one of the following will yield m-substituted product with respect to methyl group as a major product?
The Correct Option is C
Solution and Explanation
The correct answer is (C) : 
Both products are meta with respect to –CH3.
Top Questions on Phenols
- (X) $\xrightarrow[\text{FeBr}_3]{\text{Br}_2}$ (i) $\text{NaOH}$, 623 K, 300 atm; (ii) dil. HCl $\xrightarrow{\text{HNO}_3}$ A + B. The organic product (A) and (B) can be separated by :
- Correct order of acidic strength: (I) Phenol, (II) p-Cresol, (III) m-Nitrophenol, (IV) p-Nitrophenol
- Phenolic group can be identified by a positive
- The product (X) obtained in the following reaction is:
- Which of the following is most acidic?
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In the given figure, the blocks $A$, $B$ and $C$ weigh $4\,\text{kg}$, $6\,\text{kg}$ and $8\,\text{kg}$ respectively. The coefficient of sliding friction between any two surfaces is $0.5$. The force $\vec{F}$ required to slide the block $C$ with constant speed is ___ N.
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Two circular discs of radius \(10\) cm each are joined at their centres by a rod, as shown in the figure. The length of the rod is \(30\) cm and its mass is \(600\) g. The mass of each disc is also \(600\) g. If the applied torque between the two discs is \(43\times10^{-7}\) dyne·cm, then the angular acceleration of the system about the given axis \(AB\) is ________ rad s\(^{-2}\).
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Concepts Used:
Phenols
Phenol is a different class of organic compounds that are usually found in wide usage in an extensive range of industries and also for domestic purposes. Phenol is formed when a hydrogen atom in a benzene molecule is replaced by the chemical -OH group.
Phenol is also called as Carbolic acid. It is an aromatic organic compound having the molecular formula C6H5OH. It is a volatile white crystalline solid. The molecule consists of a phenyl group (−C6H5) bonded to a hydroxy group (−OH). Phenol is mildly acidic, it requires careful handling because it can cause chemical burns.
Classification of Phenol
On the basis of the different number of hydroxyl groups attached, the phenols can be classified further into three types.
- Monohydric phenols: These contain one -OH group.
- Dihydric phenols: These contain two -OH groups. These may be ortho-, meta- or para- derivative.
- Trihydric phenols: These contain three -OH groups.
Properties of Phenol
- Phenol is an organic compound that is appreciably soluble in water, with about 84.2 g dissolving in 1000 mL (0.895 M).
- It is a weak acid.
- is highly reactive toward electrophilic aromatic substitution.