Explore topic-wise MCQs in Organic Chemistry.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Organic Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following is not polyacetal?

A. Dimethoxymethane
B. Dioxolane
C. Starch
D. Cellulose
Answer» E.
Discussion
2.

Dimethoxymethane is dimethyl acetal of which of the following?

A. Formaldehyde
B. Acetaldehyde
C. Tolualdehyde
D. Propionaldehyde
Answer» B. Acetaldehyde
Discussion
3.

Which is normally the main product when a mixture of aldehyde RCHO and an excess of alcohol R OH is treated with a base catalyst?

A. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5a.png"><img alt="Product when mixture of aldehyde &amp; excess of alcohol is treated with catalyst - option a" class="alignnone size-full wp-image-224686" height="65" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5a.png" width="78"/></a>
B. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5b.png"><img alt="Product when mixture of aldehyde &amp; excess of alcohol is treated with catalyst - option b" class="alignnone size-full wp-image-224687" height="64" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5b.png" width="82"/></a>
C. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5c.png"><img alt="Product when mixture of aldehyde &amp; excess of alcohol is treated with catalyst - option c" class="alignnone size-full wp-image-224688" height="62" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5c.png" width="83"/></a>
D. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5d.png"><img alt="Product when mixture of aldehyde &amp; excess of alcohol is treated with catalyst - option d" class="alignnone size-full wp-image-224689" height="67" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5d.png" width="91"/></a>
Answer» B. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5b.png"><img alt="Product when mixture of aldehyde &amp; excess of alcohol is treated with catalyst - option b" class="alignnone size-full wp-image-224687" height="64" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5b.png" width="82"/></a>
Discussion
4.

Which is normally the main product when a mixture of aldehyde RCHO and an excess of alcohol R OH is treated with an acid catalyst?

A. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5a.png"><img alt="Product when mixture of aldehyde &amp; excess of alcohol is treated with catalyst - option a" class="alignnone size-full wp-image-224686" height="65" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5a.png" width="78"/></a>
B. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5b.png"><img alt="Product when mixture of aldehyde &amp; excess of alcohol is treated with catalyst - option b" class="alignnone size-full wp-image-224687" height="64" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5b.png" width="82"/></a>
C. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5c.png"><img alt="Product when mixture of aldehyde &amp; excess of alcohol is treated with catalyst - option c" class="alignnone size-full wp-image-224688" height="62" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5c.png" width="83"/></a>
D. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5d.png"><img alt="Product when mixture of aldehyde &amp; excess of alcohol is treated with catalyst - option d" class="alignnone size-full wp-image-224689" height="67" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5d.png" width="91"/></a>
Answer» D. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5d.png"><img alt="Product when mixture of aldehyde &amp; excess of alcohol is treated with catalyst - option d" class="alignnone size-full wp-image-224689" height="67" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q5d.png" width="91"/></a>
Discussion
5.

Which of the following most readily forms a cyclic hemiacetal with acid catalysis?

A. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4a.png"><img alt="The following most readily forms a cyclic hemiacetal with acid catalysis - option a" class="alignnone size-full wp-image-224682" height="67" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4a.png" width="139"/></a>
B. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4b.png"><img alt="The following most readily forms a cyclic hemiacetal with acid catalysis - option b" class="alignnone size-full wp-image-224683" height="67" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4b.png" width="150"/></a>
C. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4c.png"><img alt="The following most readily forms a cyclic hemiacetal with acid catalysis - option c" class="alignnone size-full wp-image-224684" height="67" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4c.png" width="178"/></a>
D. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4d.png"><img alt="The following most readily forms a cyclic hemiacetal with acid catalysis - option d" class="alignnone size-full wp-image-224685" height="68" sizes="(max-width: 202px) 100vw, 202px" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4d.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4d.png 202w, https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4d-200x68.png 200w" width="202"/></a>
Answer» D. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4d.png"><img alt="The following most readily forms a cyclic hemiacetal with acid catalysis - option d" class="alignnone size-full wp-image-224685" height="68" sizes="(max-width: 202px) 100vw, 202px" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4d.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4d.png 202w, https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q4d-200x68.png 200w" width="202"/></a>
Discussion
6.

Which combination of an aldehyde and an alcohol most readily forms a hemiacetal with base catalysis?

A. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q3a.png"><img alt="Combination of aldehyde &amp; alcohol readily form hemiacetal with base catalysis - option a" class="alignnone size-full wp-image-224678" height="69" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q3a.png" width="212"/></a>
B. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q3b.png"><img alt="Combination of aldehyde &amp; alcohol readily form hemiacetal with base catalysis - option b" class="alignnone size-full wp-image-224679" height="71" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q3b.png" width="222"/></a>
C. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q3c.png"><img alt="Combination of aldehyde &amp; alcohol readily form hemiacetal with base catalysis - option c" class="alignnone size-full wp-image-224680" height="66" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q3c.png" width="224"/></a>
D. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q3d.png"><img alt="Combination of aldehyde &amp; alcohol readily form hemiacetal with base catalysis - option d" class="alignnone size-full wp-image-224681" height="74" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q3d.png" width="235"/></a>
Answer» D. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q3d.png"><img alt="Combination of aldehyde &amp; alcohol readily form hemiacetal with base catalysis - option d" class="alignnone size-full wp-image-224681" height="74" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-acetals-q3d.png" width="235"/></a>
Discussion