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?
glucose and starch
maltose and starch
sucrose and fructose
galactose and starch
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This is because during polymerization monosaccharides fuse together either by condensation or addition polymerization
and u dey condensation polymerization there is loss of water molecules hence disaccharides and polysaccharide lack one mole of water
The selected answer is wrong:
The general formula for carbohydrates is Cx(H2O)y or CxH2yOy. Glucose is C6H12O6 which can also be written as C6(H2O)6. From the above, it means x is equal to y
REF: Check New School Chemistry, Page 660
the ansa is d glucose contains 6 atoms of carbon and 6 atoms of oxygen
