Aromatic Hydrocarbons MCQs

1.What is the main product formed when benzene undergoes ozonolysis?

2.The synthesis of benzene from acetylene is best described as which type of chemical process?

3.When benzene is heated in the presence of V2O5 at 450°C in air, which type of chemical reaction does it primarily undergo?

A reaction involving replacement of atomsA process where atoms are added to the moleculeA reaction where elements are removed from the moleculeA reaction involving the gain of oxygen or loss of hydrogenNone of the above

4.Which of the following represents the nitronium ion?

NO3-NONO2-NO2+

5.Which type of reaction is benzene unable to undergo?

6.What type of compound is acetophenone classified as?

7.Identify the fused ring aromatic compound from the following options.

DiphenylamineDiphenylmethaneNaphthaleneBiphenyl

8.At 500°C, a catalyst blend of Cr2O3, A?2O3, and SiO2 is utilized to produce benzene from which of the following compounds?

Acetylenen-HexaneBenzene sulfonic acidSodium benzoate

9.What is the product formed when toluene undergoes chlorination under sunlight?

10.Which technique was used to measure the molecular weight of benzene as 78.108?

Method based on specific gravityVapour density techniqueX-ray crystallographyDistillation process

11.What are the products formed when chlorobenzene undergoes nitration?

12.Which functional group is present in aniline, a compound derived from benzene?

13.In benzene sulphonic acid, the sulphonic group is connected to the benzene ring via which atom?

14.What is the product obtained in three moles upon the hydrolysis of benzenetrizonide?

GlyoximeBenzaldehydeEthylene glycolGlyoxal

15.Identify the molecular formula of benzenetriozonide.

C6H6O9C6H5O8C6H5O9C6H6O6

16.Which of the following substances yield benzoic acid when oxidized using acidified potassium permanganate or potassium dichromate?

TolueneEthylbenzenen-PropylbenzeneAll of the above

17.What is the name of the reaction where a hydrogen atom on benzene is replaced by an alkyl group using an alkyl halide and aluminum chloride?

Dows methodFriedel and Crafts acylationFriedel and Crafts alkylationClemmensen reduction

18.Which of the following statements about benzene is incorrect?

Hydrogenation of benzene releases 208 kJ per mole of energy.The length of the C-H bond in benzene measures approximately 1.09 Å.Benzene has a molecular weight of 78.108 g/mol.The resonance energy of benzene is 150.5 kcal per mole.

19.Which of the following substances is most reactive towards sulfonation?

BenzeneNitrobenzeneTolueneChlorobenzene