StudentAidUnit 20: Aromatic Hydrocarbons — Mcqs
12th Class Chemistry · Unit 20: Aromatic Hydrocarbons
0 of 0 answered
0 correct
Q1.I.Which of the following is the major product when methyl chloride (CH₃Cl) reacts with methylbenzene in the presence of AlCl₃:
- a 1,2-dimethyl benzene
- b 1,4-dimethyl benzene
- c 1,3-dimethyl benzene
- d both (a) and (b)
Q1.II.Bromine reacts more readily with phenol than with benzene. This is because the:
Q1.III.Aluminium chloride catalyses the reaction of benzene and ethanoyl chloride. This is because aluminium chloride:
Q1.IV.Benzene is nitrated using a mixture of concentrated nitric and sulphuric acids. The sulphuric acid:
Q1.V.In the reaction of benzene with chloromethane, aluminium chloride is added because it reacts with:
Q1.VI.Methylbenzene reacts with a mixture of concentrated nitric acid and concentrated sulphuric acid. What is the name of the mechanism for this reaction?
Q1.VII.X-ray diffraction provides evidence that benzene molecules have:
Q1.VIII.Which statement(s) support(s) the delocalised model for the structure of benzene? [1] All carbon–carbon bonds have the same length. [2] The enthalpy change of hydrogenation of benzene is less exothermic than expected. [3] Bromine reacts with benzene less readily than with cyclohexene.
Q1.IX.Benzene reacts with an organic reagent in the presence of a halogen carrier to form phenylethanone. Which organic reagent is required?