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प्रश्न
Which of the following monosaccharides are present as five membered cyclic structure (furanose structure)?
(i) Ribose
(ii) Glucose
(iii) Fructose
(iv) Galactose
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उत्तर
(i) Ribose
(iii) Fructose
Explanation:
Ribose and fructose are presented as five-membered cyclic structure (furanose structures). They have five-membered ring with analogy to the compound foran.
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संबंधित प्रश्न
Glucose or sucrose are soluble in water but cyclohexane or benzene (simple six membered ring compounds) are insoluble in water. Explain.
What are the expected products of hydrolysis of lactose?
What are the hydrolysis products of sucrose?
The number of primary and secondary hydroxyl groups in ribose are -
(a) 1, 3
(b) 2, 3
(c) 3, 1
(d) 3, 2
The following molecule is called as:
\[\begin{array}{cc}
\ce{CHO}\phantom{..}\\
|\phantom{......}\\
\ce{(CHOH)4}\\
|\phantom{......}\\
\ce{CH2OH}
\end{array}\]
Which of the following gives a positive Fehling solution test?
Glucose gives silver mirror test with Tollen’s reagent. It shows the presence of ____________.
Which of the following monosaccharide is pentose?
Monosaccharides usually contains ____________ carbon atoms.
A carbohydrate that cannot be hydrolysed into simpler units is called ____________.
Reducing sugars reduce ____________.
Glucose can’t be classified as ____________.
The pair of compounds in which both the compounds give the positive test with Tollen’s reagent is:
Three cyclic structures of monosaccharides are given below which of these are anomers.
| (I) |  |
| (II) |  |
| (III) |  |
Name the linkage connecting monosaccharide units in polysaccharides.
Assertion: Deoxyribose, \[\ce{C5H10O4}\] is not a carbohydrate.
Reason: Carbohydrates are hydrates of carbon so compounds which follow \[\ce{C_x(H2O)_y}\] formula are carbohydrates.
Account for the following:
Glucose is a reducing sugar
