Benedict's Reagent Is a Chemical That Is Used as a Test

question 54

Multiple Choice

Benedict's reagent is a chemical that is used as a test for the presence of a free aldehyde functional group on glucose.The aldehyde is used when glucose and fructose bind together to form sucrose,and the Benedict's test is negative.Starch contains a great deal of glucose but gives a negative Benedict's test because:

• A)all of the aldehyde groups on the starch are oxidized and cannot react with the Benedict's reagent.
• B)starch is not soluble in water and cannot react with Benedict's reagent.
• C)glucose in starch has lost a carbon atom and cannot react with Benedict's reagent.
• D)only the glucose at the end of a chain of starch will have an exposed aldehyde functional group to react with Benedict's reagent.

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Definitions:

Indifference Curve

A graphical representation showing different bundles of goods between which a consumer is indifferent, reflecting their preferences and utility.

Total Utility

The overall satisfaction or benefit a consumer receives from consuming a particular quantity of a good or service.

Indifference Curve

A graphical representation showing combinations of goods or services among which a consumer is indifferent, meaning they have no preference for one combination over another, holding utility constant.

Absolute Value

The non-negative value of a number without regard to its sign.