When two monosaccharide combine together they form large sugar molecule known as disaccharide. Dissacharide are also known as double sugar whose general formula is C12H22O11. Formula of glucose and fructose is C6H12O6 and when they combine they form one molecule of sucrose and water.
When glucose and fructose combine they form sucrose which is a disaccharide joint by glycosidic linkage.
