A) ketohexose
B) aldohexose
C) disaccharide
D) polysaccharide
Correct Answer: B
Solution :
Ketohexose: Mono saccharides having 6 carbon atoms and containing a keto group are ketohexose e. g., fructose. Aldohexose: Mono saccharides having 6 carbon atoms and an aldehyde group are called aldohexose. e. g., glucose. Disaccharide: Carbohydrates which on hydrolysis give two molecules of same or different mono saccharides are called disaccharides e. g., sucrose. \[\underset{Sucrose}{\mathop{{{C}_{12}}{{H}_{22}}{{O}_{11}}}}\,+{{H}_{2}}O\xrightarrow[{}]{{{H}^{+}}}\underset{Glucose}{\mathop{{{C}_{6}}{{H}_{12}}{{O}_{6}}}}\,+\underset{Fructose}{\mathop{{{C}_{6}}{{H}_{12}}{{O}_{6}}}}\,\] Polysaccharide: They are condensation polymers in which the mono saccharides are joined by glycosidic. linkages, e.g., starch. \[\therefore \]glucose is a aldohexose. It has a structure: \[\underset{\begin{smallmatrix} | \\ C{{H}_{2}}OH \end{smallmatrix}}{\overset{\begin{smallmatrix} CHO \\ | \end{smallmatrix}}{\mathop{{{(CHOH)}_{4}}}}}\,\]
You need to login to perform this action.
You will be redirected in
3 sec
