In a chemical reaction 'X' is able to convert `Cu^2+`" ions to `Cu^+` ons. If "X" is a carbohydrate, which of the following best explains to be the 'X*?

Options

A. X' is a reducing sugar
B. X'is a non-reducing sugar
C. X' is a monosaccharide
D. Both (a) and ©

Answer

To solve the question, we need to analyze the information provided about the chemical reaction involving 'X' and the conversion of `Cu^2+` ions to `Cu^+` ions. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand the Reaction
The reaction involves the conversion of `Cu^2+` (cupric ions) to `Cu^+` (cuprous ions). This indicates a reduction process, where the oxidation state of copper decreases from +2 to +1.

**Hint:** Remember that reduction involves the gain of electrons or a decrease in oxidation state.

### Step 2: Identify the Role of 'X'
Since 'X' is a carbohydrate that facilitates this reduction, it must have the ability to donate electrons. This property is characteristic of reducing sugars.

**Hint:** Consider the functional groups present in carbohydrates that can act as reducing agents.

### Step 3: Recognize Reducing Sugars
Reducing sugars are carbohydrates that contain free aldehyde or ketone groups. These groups can reduce metal ions like `Cu^2+` to `Cu^+`. Common examples of reducing sugars include monosaccharides such as glucose and fructose.

**Hint:** Think about which types of carbohydrates typically have free functional groups that can participate in redox reactions.

### Step 4: Analyze the Options
Now we will evaluate the options provided:
- A. X is a reducing sugar: This is true because it can reduce `Cu^2+` ions.
- B. X is a non-reducing sugar: This is false since non-reducing sugars (like sucrose) do not have free aldehyde or ketone groups.
- C. X is a monosaccharide: This is also true, as all monosaccharides are reducing sugars.
- D. Both A and C: Since both statements A and C are correct, this option is also correct.

**Hint:** Look for the definitions of reducing and non-reducing sugars to clarify your understanding.

### Conclusion
Based on the analysis, the best explanation for 'X' is option D: "Both A and C" (X is a reducing sugar and X is a monosaccharide).

**Final Answer:** D. Both A and C.