Carbohydrates are large molecules with the molecular formula C\(_x\)(H\(_2\)O)\(_y\). In which of the following pairs is x not equal to y?
A. glucose and starch
B. maltose and starch
C. sucrose and fructose
D. maltose and starch
Correct Answer: B
Explanation
Glucose = C\(_6\)(H\(_2\)O)\(_6\)
= C\(_6\)H\(_{12}\)O\(_6\)
Maltose = C\(_{12}\) (H\(_2\)O)\(_{11}\)
= C\(_{12}\)H\(_{22}\)O\(_{11}\)
Starch = C\(_6\) (H\(_2\)O)\(_5\)
= C\(_6\)H\(_{10}\)O\(_5\)
Sucrose =Â C\(_{12}\) (H\(_2\)O)\(_{11}\)
= C\(_{12}\)H\(_{22}\)O\(_{11}\)
Fructose =Â C\(_6\)(H\(_2\)O)\(_6\)
= C\(_6\)H\(_{12}\)O\(_6\)
Â
