Which of the following carbohydrates has a glycosidic linkage ?

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Fructofuranose

Glucopyranose

Maltose

$β - D -$ Fructose

answer is C.

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Detailed Solution

The problem is asking about a hydrocarbon with the formula $C6H8$ that undergoes catalytic hydrogenation and ozonolysis to form a product. The two moles of methane dicarbaldehyde suggest a certain structural feature.

Looking at the options:

Option A (Hexa - 1,3,5-triene): This suggests a triene structure with alternating double bonds. However, the ozonolysis of this molecule wouldn't produce the same product as described in the question.
Option B (1-methylcyclopropene - 1,4-diene): This is a possibility, but it doesn't fit the described reactions.
Option C (Cyclohexa - 1,3-diene): This is also a potential candidate because it has conjugated double bonds, and catalytic hydrogenation could lead to an addition of hydrogen. Its ozonolysis could give two moles of aldehyde.
Option D (Cyclohexa - 1,4-diene): This option could also be valid, but it doesn't have the ideal conjugation required to match the ozonolysis pattern.

The correct answer is C (Cyclohexa - 1,3-diene) because it fits the reaction mechanism described.

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