Question

What is the structure of the major product when phenol is treated with bromine water ?

A. Alcohol, Phenol and Ether mcq option image  
B. Alcohol, Phenol and Ether mcq option image
C. Alcohol, Phenol and Ether mcq option image
D. Alcohol, Phenol and Ether mcq option image
Answer :   Alcohol, Phenol and Ether mcq option image
Solution :
Phenol has activating ( electron releasing ) $$–OH$$  group and bromine water supplies $$B{r^ + }\,ion$$   easily, hence under such conditions reaction does not stop at monobromo or dibromo stage but a fully brominated ( 2, 4, 6, - tribromophenol ) compound is the final product.
Alcohol, Phenol and Ether mcq solution image

Releted MCQ Question on
Organic Chemistry >> Alcohol, Phenol and Ether

Releted Question 1

Ethyl alcohol is heated with conc $${H_2}S{O_4}$$  the product formed is

A. \[{{H}_{3}}C\underset{\begin{smallmatrix} \parallel \\ O \end{smallmatrix}}{\mathop{-C-}}\,O{{C}_{2}}{{H}_{5}}\]
B. $${C_2}{H_6}$$
C. $${C_2}{H_4}$$
D. $${C_2}{H_2}$$
Releted Question 2

The compound which reacts fastest with Lucas reagent at room temperature is

A. $${\text{butan - 1 - ol}}$$
B. $${\text{butan - 2 - ol}}$$
C. $${\text{2 - methylpropan - 1 - ol}}$$
D. $${\text{2 - methylpropan - 2 - ol}}$$
Releted Question 3

A compound that gives a positive iodoform test is

A. 1 - pentanol
B. 2 - pentanone
C. 3 - pentanone
D. pentanal
Releted Question 4

Diethyl ether on heating with conc. $$HI$$  gives two moles of $$H$$

A. ethanol
B. iodoform
C. ethyl iodide
D. methyl iodide

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Alcohol, Phenol and Ether


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