Which of the following statements are correct?
(i) The natural glucose and fructose are D-forms.
(ii) Glucose and fructose both are monosaccharides.
(iii) The solution having equal molecules of D-glucose and D-fructose is termed as invert sugar.
(iv) Aldohexoses exists in 
optical forms.
Text Solution
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(i) and (ii) are factual statements. Statement (iii) is correct as equimolar solution of glucose
and fructose have negative optical rotation.
Aldohexoses have 4 chiral carbon atoms, so they exist in 
optical forms. So, statement (iv) is not correct.
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