Which of these pairs of functional groups can react together to form a polyester?
-C=C-\text{-C=C-}-C=C- and -OH\text{-OH}-OH
-COOH\text{-COOH}-COOH and -OH\text{-OH}-OH
-COOH\text{-COOH}-COOH and -NH2\text{-NH}_2-NH2
-NH2\text{-NH}_2-NH2 and -OH\text{-OH}-OH
83 exam-style questions on OCR GCSE Chemistry Organic chemistry. Each one has a worked solution and a mark scheme showing where the marks go.