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1 | |
Which compound contains an allyl group?
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0072828374/211137/5_1.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (16.0K)</a>]]> |
| | A) | A |
| | B) | B |
| | C) | C |
| | D) | D |
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2 | |
Pi (p) bonds are formed by the? |
| | A) | Overlap of two s orbitals. |
| | B) | Overlap of an s and a p orbital. |
| | C) | End-to-end overlap of two p orbitals. |
| | D) | Side-to-side overlap of two p orbitals. |
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3 | |
Stereoisomers are? |
| | A) | Molecules with the same numbers of atoms but different structures. |
| | B) | Molecules with the same structure. |
| | C) | Cyclic molecules. |
| | D) | Linear molecules with single bonded carbon atoms. |
| | E) | Molecules with different conformations due to a double bond. |
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4 | |
Which is the most stable isomer?
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0072828374/211137/5_4.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (22.0K)</a>]]> |
| | A) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072828374/337327/54a.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]> |
| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072828374/337327/54b.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]> |
| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072828374/337327/54c.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]> |
| | D) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072828374/337327/54d.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]> |
| | E) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072828374/337327/54e.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]> |
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5 | |
Alkenes are prepared by? |
| | A) | Addition reactions |
| | B) | Substitution reactions |
| | C) | Elimination reactions |
| | D) | Claisen reactions |
| | E) | Free radical reactions |
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6 | |
Dehydration of alcohols is usually accomplished by? |
| | A) | Treating the alcohol with H2SO4 |
| | B) | Treating the alcohol with HCl |
| | C) | Treating the alcohol with NaOH |
| | D) | Treating the alcohol with Br2 |
| | E) | Treating the alcohol with SOCl2 |
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7 | |
Zaitsev's rule states? |
| | A) | Eliminations occur with the loss of a a hydrogen. |
| | B) | Eliminations occur with the loss of a b hydrogen. |
| | C) | Eliminations occur with the loss of a b hydrogen, and form the least substituted alkene. |
| | D) | Eliminations occur with the loss of a b hydrogen, and form the most substituted alkene. |
| | E) | Eliminations occur with the loss of a b hydrogen, and form cyclic alkenes. |
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8 | |
Which statement about the rearrangement of carbocations is not true? |
| | A) | Rearrangements can involve methyl shifts. |
| | B) | Rearrangements can involve hydride shifts. |
| | C) | Rearrangements occur to form less stable carbocations. |
| | D) | Rearrangements can involve 1o carbocations. |
| | E) | Rearrangements can involve 2o carbocations. |
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9 | |
The loss of a halide atom to generate an alkene is known as? |
| | A) | A dehydrohalogenation. |
| | B) | A dehydration. |
| | C) | A reduction. |
| | D) | An oxidation. |
| | E) | A Diels-Alder reaction. |
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10 | |
The most reactive conformation for an E2 reaction is? |
| | A) | Syn periplanar. |
| | B) | Anti periplanar. |
| | C) | Gauche stagger |
| | D) | Gauche eclips |
| | E) | Eclips |
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11 | |
A regioselective reaction is one which? |
| | A) | A single product is produc |
| | B) | Multiple products are made in equal amounts. |
| | C) | Multiple products are made with one in excess of the others. |
| | D) | Involves an oxidation. |
| | E) | Involves a reduction reaction. |
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12 | |
The loss of a hydroxyl group (an alcohol) to generate an alkene is known as? |
| | A) | A dehydrohalogenation. |
| | B) | A dehydration. |
| | C) | A reduction. |
| | D) | An oxidation. |
| | E) | A Diels-Alder reaction. |
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