Download and practise with this ZIMSEC O-Level Chemistry Paper 2 November 2022 question paper. Useful for exam revision, past paper practice, and preparation in Zimbabwe.
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This is the ZIMSEC O-Level Chemistry question paper for Paper 2 from November 2022. Use it for exam practice under timed conditions.
3 The structure of an organic compound $A$ is shown below
a (i) Name the organic componend $A$
(ii) What type of isomerism is exhibited by $A$; explain.
(2)
(b) Compound $A$ reacts with $B_{2(i)}$ in the presence of uv light.
(1) Cure a mechanism for the reaction.
(ii) Name the type of reaction. (i)
c(1) Define the term functional group:
(ii) Explain whing allaves are elemically ineit (2)
(iii) Desoribe how akenes are produred from allavies. (2)
HavAn organic compound $C$ has a motecular formula $\mathrm{C}_{7} \mathrm{H}_{12}: \mathrm{C}$ reacts with $\mathrm{Br}_{2}(\mathrm{kq})$ in the ratio $1.1 . C$ produces a single organic compound $D, \mathrm{C}_{7} \mathrm{H}_{12} \mathrm{O}_{3}$ when mixed with hot concentrated $\mathrm{KM}_{n \mathrm{O}_{4}}$.
(1) Suggest a Suitable. Structural formulae for compound $C$ and herice $D(2)$
(ii) Give the structural formular of the compound
- firmed when $C$ reacts with cold $\mathrm{KMMnO}_{4}$ (i)
(b) The structure of pentain-2,4-dione, The compound which exhibits a phenomenon called tautomerism is shown below.
\[
\mathrm{CH}_{3} \mathrm{I}_{0} \mathrm{CH}_{2} \mathrm{II}_{\mathrm{O}} \mathrm{CH}_{3}
\]
(i) Suggest the structural formula for the enol firm. (i)
(ii) What type of isomerism is exhibited by the enot form, if any. (1)
(iii) Name functional groups on the enol form (2)