Aromatic Compounds and Aryl Halides questions
308 published questions with worked solutions.
- Benzene reacts with chloroform in the presence of anhydrous AlCl_3 to give
- Which of the following annulenes is aromatic according to Hückel's rule?
- The tropylium cation (C_7H_7^+) is aromatic because it has
- Arrange the following in order of decreasing rate of nitration: toluene, benzene, nitrobenzene, chlorobenzene.
- Which of the following directs an incoming electrophile predominantly to the *meta* position in electrophilic aromatic...
- The most stable resonance structure that explains the directing effect of –NH_2 in aniline (toward electrophilic substitution)...
- Benzene fails to undergo addition reactions as readily as alkenes because
- Benzene on catalytic hydrogenation with H_2/Ni at high pressure and temperature gives
- Ozonolysis of benzene, followed by hydrolysis, gives
- The heat of hydrogenation of benzene (to cyclohexane) is considerably less (less exothermic) than three times the heat of...
- Benzene reacts with Cl_2 in the presence of anhydrous FeCl_3 (a Lewis acid catalyst, dark/cold conditions) to give mainly
- Benzene reacts with Cl_2 in the presence of sunlight (no catalyst) to give mainly
- Benzene vapour mixed with air, when passed over a V_2O_5 catalyst at 725 K, gives
- Benzene + (CH_3)_2CH–CH_2Cl AlCl _3 (anhyd.) X. Identify X.
- Toluene is heated with Cl_2 and light, in the absence of a halogen carrier, using an excess of chlorine. The product formed is
- Chlorobenzene + CH_3CH_2CH_2Cl AlCl _3 X. Predict the structure of X.
- The product formed when acetylene is passed through a red-hot tube is
- The main constituent of the light-oil fraction of coal-tar distillation is
- *n*-Hexane/*n*-heptane vapour, passed through Cr_2O_3 supported on alumina at 600°C, gives
- Benzene has ________ electrons.
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