Page 61 of the textbook linked below shows at the bottom that Elimination (dehydration) forms an Ester. but the molecule drawn above is clearly an alkene... is the textbook just incorrect? or have i missed something here....
http://www.pearsonschoolsandfecolleges.co.uk/AssetsLibrary/SECTORS/Secondary/PDFs/Science/HeinemannScience/OCRALevelSampleLessons/OCRASChemistry_RevisionGuide9780435583712_Unit2Module2.pdf
http://www.pearsonschoolsandfecolleges.co.uk/AssetsLibrary/SECTORS/Secondary/PDFs/Science/HeinemannScience/OCRALevelSampleLessons/OCRASChemistry_RevisionGuide9780435583712_Unit2Module2.pdf
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You are quite correct - the molecule shown is an alkene - in this case ethene. The text book is obviously wrong - this cannot be an ester.