Quiz về Đường và Phân Tử

What is the molecular formula of maltose?

• C6H12O6

• C2H4O2

• (C6H10O5)n

• C12H22O11

How do two glucose units in a maltose molecule link together?

• -1,4-glycoside

• -1,2-glycoside

• -1,6-glycoside

• -1,2-glycoside

How many carbon atoms are in a sucrose molecule?

• 6

• 5

• 12

• 10

Sucrose and glucose both react with:

• H2 (Ni, t°)

• Tollens' reagent

• Cu(OH)2

• Hydrolysis

A sucrose molecule contains

• one unit of β-glucose and one unit of β-fructose

• one unit of β-glucose and one unit of α-fructose

• two units of α-glucose

• one unit of α-glucose and one unit of β-fructose

The glucose unit and the fructose unit in a sucrose molecule link through which atom?

• hydrogen

• nitrogen

• carbon

• oxygen

Which substance is hydrolyzed when heated in an acidic environment?

• Sucrose

• Glycerol

• Glucose

• Fructose

Which of the following does not have a silver mirror reaction when reacted with Tollens' reagent?

• Sucrose

• Glucose

• Maltose

• Fructose

In solution, sucrose reacts with Cu(OH)2 to give a solution of what color?

• yellow

• blue

• purple

• brown red

Which reaction does sucrose participate in?

• Reaction with Tollens' reagent

• Reaction with bromine water

• Reaction with Cu(OH), producing a blue solution

• Hydrolysis in an acidic environment