The table gives information about some esters and the fragrance they produce.<table class="table" table-bordered><tbody><tr><td><b>Ester</b></td><td><b>Fragrance</b></td></tr><tr><td>Ethyl methanoate</td><td>Rum</td></tr><tr><td>Methyl butanoate</td><td>Apple</td></tr><tr><td>Ethyl butanoate</td><td>Pineapple</td></tr><tr><td>Propyl ethanoate</td><td>Pear</td></tr></tbody></table><br>Which structure do the ester compounds in the table have in common?<br><img src="/assets/questions/media/NCERT-Solutions-for-Class-10-Science-Chapter-4-Carbon-and-its-Compounds-MCQs-Q22.png" alt="NCERT Solutions for Class 10 Science Chapter 4 Carbon and its Compounds MCQs Q22" srcset="https://www.learncbse.in/wp-content/uploads/2019/09/NCERT-Solutions-for-Class-10-Science-Chapter-4-Carbon-and-its-Compounds-MCQs-Q22.png 346w">