Question

Although benzene is highly unsaturated it does not undergo addition reactions. The explanation of this can be suggested as

A. $$\pi $$ - electrons of benzene ring are delocalised  
B. since $$\pi $$ - electrons are present inside the ring, addition cannot take place
C. cyclic structures do not show addition reactions
D. benzene is not a reactive compound
Answer :   $$\pi $$ - electrons of benzene ring are delocalised
Solution :
$$\pi $$ - electrons of benzene ring are delocalised throughout the molecule. This makes the molecule very stable. The stability resists breaking of double bonds for addition.

Releted MCQ Question on
Organic Chemistry >> Hydrocarbons (Alkane, Alkene and Alkyne)

Releted Question 1

Marsh gas mainly contains

A. $${C_2}{H_2}$$
B. $$C{H_4}$$
C. $${H_2}S$$
D. $$CO$$
Releted Question 2

Which of the following decolourises alkaline $$KMn{O_4}$$

A. $${C_3}{H_8}$$
B. $${C_2}{H_4}$$
C. $$C{H_4}$$
D. $$CC{l_4}$$
Releted Question 3

The compound with the highest boiling point is

A. $$n $$ - hexane
B. $$n $$ - pentane
C. 2, 2 - dimethylpropane
D. 2 - methylbutane
Releted Question 4

The maximum number of isomers for an alkene with the molecular formula $${C_4}{H_8}$$  is

A. 2
B. 3
C. 4
D. 5

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Hydrocarbons (Alkane, Alkene and Alkyne)


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