A deactivating group

Important Questions on Hydrocarbons

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Alpha Question Bank for Medical: Chemistry>Chapter 22 - Hydrocarbons>Exercise 1>Q 172

$-{\mathrm{NH}}_2$ group in aniline is:

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Alpha Question Bank for Medical: Chemistry>Chapter 22 - Hydrocarbons>Exercise 1>Q 173

Among the following groups, the group that deactivates the benzene ring. for further electrophilic substitution is:

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Alpha Question Bank for Medical: Chemistry>Chapter 22 - Hydrocarbons>Exercise 1>Q 174

$\mathrm{o}$, $\mathrm{p}$-directing group are mostly:

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Alpha Question Bank for Medical: Chemistry>Chapter 22 - Hydrocarbons>Exercise 1>Q 175

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Alpha Question Bank for Medical: Chemistry>Chapter 22 - Hydrocarbons>Exercise 1>Q 178

Nitrobenzene can be prepared from benzene by using a mixture of conc. ${\mathrm{HNO}}_3$ and conc. ${\mathrm{H}}_2{\mathrm{SO}}_4$. In the nitrating mixture ${\mathrm{HNO}}_3$ acts as a:

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Alpha Question Bank for Medical: Chemistry>Chapter 22 - Hydrocarbons>Exercise 1>Q 179

For the electrophilic substitution reaction involving nitration, which of the following sequence regarding the rate of reaction is true?

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Alpha Question Bank for Medical: Chemistry>Chapter 22 - Hydrocarbons>Exercise 1>Q 180

Benzene when heated with conc. ${\mathrm{H}}_2{\mathrm{SO}}_4$ forms:

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Alpha Question Bank for Medical: Chemistry>Chapter 22 - Hydrocarbons>Exercise 1>Q 181

The attacking electrophilic species in sulphonation of benzene is