How many aldose, ketose and furanose and pyranose units are present in maltose?

Question

How many aldose, ketose and furanose and pyranose units are present in maltose? <img class="img-fluid question-image" alt="Question" src="https://cdn.tardigrade.in/q/nta/c-t6yqkfhcdria.png" /> (A) 0 aldose, 2 ketose, 0 furanose, 2 pyranose (B) 1 aldose, 1 ketose, 1 furanose, 1 pyranose (C) 2 aldose, 0 ketose, 0 furanose , 2 pyranose (D) 2 aldose, 0 ketose, 1 furanose, 2 pyranose

Tardigrade Admin · Accepted Answer

Monomer of maltose is α -D-glucopyranose. It is disaciharide, so 2 aldose in 2 pyranose forms are present in maltose.

Q. How many aldose, ketose and furanose and pyranose units are present in maltose?

0 aldose, 2 ketose, 0 furanose, 2 pyranose

1 aldose, 1 ketose, 1 furanose, 1 pyranose

2 aldose, 0 ketose, 0 furanose , 2 pyranose

2 aldose, 0 ketose, 1 furanose, 2 pyranose

Monomer of maltose is $α$ -D-glucopyranose. It is disaciharide, so 2 aldose in 2 pyranose forms are present in maltose.