Question

Q.7
(3) Glucose, fructose and sucrose
A monosaccharide is a simple polyhydroxy aldehyde or ketone molecules, which cannot be
further hydrolysed into smaller units. The number of carbon atoms in monosaccharide vary
from
(1) 2-8 carbons (2) 2-7 carbons (3) 3-6 carbons (4) 3-7 carbons​

Answer 1

Answer:

The number of carbon atoms in monosaccharides vary from  $3-7$ carbons.

Explanation:

Monosaccharides are the simplest carbohydrates that cannot be hydrolyzed into simpler units. They usually have three to seven carbon atoms, but the most common monosaccharides have five and six carbon atoms. The general name of the monosaccharides according to the number of carbon atoms is trioses ( $3$ carbons), tetroses ( $4$ carbons), pentoses ( $5$ carbons), hexoses ($6$ carbons), heptoses ( $7$ carbons). The general chemical formula of monosaccharides is  $(CH_2O)_n$, where n≥$3$.

Glucose and fructose are monosaccharides having six carbon atoms each, with polyhydroxy aldehyde and polyhydroxy ketone, respectively.

Sucrose is a disaccharide which can be further hydrolyzed into glucose and fructose.