Advertisements
Advertisements
प्रश्न
Which of the following statements is not true about glucose?
विकल्प
It is an aldohexose.
On heating with HI, it forms n-hexane.
It is present in pyranose form.
It gives 2, 4 DNP test.
Advertisements
उत्तर
It gives 2, 4 DNP test.
Explanation:
Because glucose lacks an open chain structure, it lacks a free –CHO group. Actually, the –CHO group interacts with C5–OH to produce a six-membered oxide ring known as a hemiacetal ring. As a result, because glucose resides primarily (99%) in the cyclic hemiacetal form, it does not pass the 2, 4-DNP test.
APPEARS IN
संबंधित प्रश्न
What is the action of following reagents on glucose?
hydroxyl amine
How is glucose prepared by commercial method? How is peptide linkage formed?
Carbohydrates are classified on the basis of their behaviour on hydrolysis and also as reducing or non-reducing sugar. Sucrose is a:
(i) monosaccharide
(ii) disaccharide
(iii) reducing sugar
(iv) non-reducing sugar
How do you explain the presence of five – OH groups in glucose molecule?
The α-D glucose and β-D glucose differ from each other due to difference in carbon atom with respect to its
A nucleoside is made of:-
Which of the following base is not present in RNA?
A nucleoside acids, the sequence is
Among the naturally occuring carbohydrates, furanose ring is found in the:
When sucrose is heated with cone. HNO3 the product is ______.
