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Multiple Choice Questions on Alkanes - Organic Chemistry

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1. What is the IUPAC name for the following compound?


(a) 1,3-pentamethylpropane

(b) 1,1,3,3-tetramethylbutane

(c) 2,4,4-trimethylpentane

(d) 2,2,4-trimethylpentane



2. What is the IUPAC name for the following compound?


(a) dimethylcyclohexane

(b) 1,3-dimethylcyclohexane

(c) cis-1,3-dimethylcyclohexane

(d) trans-1,3-dimethylcyclohexane



3. The most stable conformational isomer of cis-1-bromo-2-chlorocyclohexane will have...

(a) both halide atoms in axial positions.

(b) both halide atoms in equatorial positions.

(c) the bromine atom in an axial position and the chlorine atom in an equatorial position.

(d) the bromine atom in an equatorial position and the chlorine atom in an axial position.



4. The most stable conformational isomer of trans-1-ethyl-2-methylcyclohexane will be...




5. Which Newman projection shows the most stable conformation of the following compound?




6. Which of the following compounds would yield this energy-rotation diagram?




7. Which of the these compounds represents the major monochlorination isomer formed in the following reaction?




8. How many dichlorinated isomers can be formed by the halogenation of CH3CH2CH2CH3 with Cl2 in the presence of light?

(a) 2

(b) 3

(c) 5

(d) 6

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