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Aromatic Hydrocarbon
q/a
| Question | Answer |
|---|---|
| Huckel's rule? | (4n+2)π = no. of π electrons where n= whole number |
| What is the main source of Aromatic hydrocarbon? | Coal |
| Coal ---destructive distillation---> ?? | coal tar + coal gas |
| Main source of benzene is? | Coal tar--> fractional distillation gives benzene |
| Which fraction of fractional distillation gives benzene? | Light oil |
| Light oil fraction(170 C) of coal tar gives? | Benene, toulene, xylene (BTX) |
| Middle oil fraction(170-230 C) of coal tar gives? | Phenol |
| Heavy oil fraction (230-270 C) of coal tar gives? | Napthalene |
| Green oil fraction (270-360 C) of coal tar gives? | Anthracene |
| What is the ratio of σ and π bonds in benzene? | σ=12 and π=3. σ:π= 4:1 |
| How many 120° bond angles are present in benzene ring? | 3 * 6 = 18 |
| Cyclic polymerization of ethyne gives? | Benzene |
| Cyclic polymerization of propyne gives? | Mesitylene |
| Soda lime decarboxylation of sodium benzoate gives? | Benzene |
| Soda lime decarboxylation of sodium salicylate gives? | Phenol |
| Reduction of phenol gives? | Benzene |
| Reduction of Salicylic acid gives? | Carboxylic acid |
| When Benzyl alcohol is treated with zinc it gives? | No reaction |
| Reduction of Benzene diazonium chloride gives? | Benzene |
| Characteristic reaction of benzene and it's derivatives? | Electrophilic substitution Reaction |
| What is the reactivity order towards ESR? | Anniline> Phenol> Toulene> Benzene> Chlorobenzene> Nitrobenzene (AP To Bohut Chalakh Nikle) |
| What is the significance of Lewis acid in ESR? | Lewis acid generates electrophile on the reaction media |
| Halogenation of benzene gives? | Chlorobenzene |
| Halogenation of benzene when chlorine is in excess gives? | Lindane, 666, BHC |
| Friedel craft alkylation of Benzene with chloro methane gives? | Toulene |
| Formation of BHC from Benzene is an example of? | Free radical addition reaction |
| Friedel craft acylation of Benzene and acyl chloride gives? | Acetophenone |
| Nitration of benzene gives? | Nitrobenzene |
| Nitrating agent is? | conc. HNO3 +conc. H2SO4 |
| Among the nitrating agent which one is Bronsted base and acid? | Bronsted Acid--> H2SO4 Bronsted Base--> HNO3 |
| What is the electrophile in Nitration? | Nitronium Ion [NO 2] + |
| What is the sulphonating agent in sulphonation? | conc. H2SO4 |
| What is the electrophile in sulphonation? | Sulphonic acid SO3 / SO3H |
| What is Gatterman-Koch's reaction? | Benzene + CO + HCl ---AlCl3--> Benzaldehyde (Gutter Co acid becha ali) |
| CO and HCL react to form? | Formyl Chloride |
| Ozonolysis is used to? | Ozonolysis is used to locate the position of double bond |
| What catalyst is used in Oxidative ozonolysis? | H2O |
| What catalyst is used in Reductive ozonolysis? | Zn + H2O |
| Effect of H2O2 on aldehyde? | H2O2 oxidizes aldehyde to carboxylic acid |
| Effect of zinc on H2O2? | Zn reduces H2O2 to H2O and self gets oxidized to ZnO |
| Oxidative Ozonolysis of benzene gives? | 3 COOH - COOH (oxalic acid) |
| Reductive Ozonolysis of benzene gives? | 3 CHO - CHO (glyoxal) |
Created by:
Mushroomang
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