JAMB Past Questions and Answers - Page 1493

7,462.

What is the IUPAC name for the hydrocarbon

A.

2-ethyl-4-methylpent-2-ene

B.

3,5-dimethylhex-3-ene

C.

2,4-dimethylhex 3-ene

D.

2-methyl-4-ethylpent-3-ene

Correct answer is A

No explanation has been provided for this answer.

7,463.

Use the graph above to answer this question. The structure of cis-2-butene is

A.

A

B.

B

C.

C

D.

D

Correct answer is B

No explanation has been provided for this answer.

7,464.

Changes in the physical in the scheme above.The letter X,Y and Z respectively represent

A.

sublimation, condensation and freezing

B.

sublimation, vapourization and solidification

C.

freezing, condensation and sublimation

D.

evaporation, liquefaction and solidification

Correct answer is A

No explanation has been provided for this answer.

7,465.

What is the IUPAC name for the compound

A.

1-chloro-2-methylprop-2,3-ene

B.

1-chloro-2-methylprop-2-ene

C.

3-chloro-2-methylprop-1-ene

D.

3-chloro-2methylprop-1,2-ene

Correct answer is C

It is vital you rearrange/redraw the structure if confusing this will make naming the compound easier. the name of the compound above is 3 - chloro-2- methyl prop - 1 - ene.