Which of the following is crystalloid

Options

A. Egg albumin
B. Starch
C. Glucose
D. Gum

Explanation

To determine which of the given options is a crystalloid, we need to understand the definitions and characteristics of colloids and true solutions (crystalloids).

### Step-by-Step Solution:

1. **Understand the Definition of Crystalloid**:
- A crystalloid is a type of true solution that can pass through a semi-permeable membrane. It consists of small particles that are typically less than 1 nanometer in size.

2. **Identify the Given Options**:
- A) Egg albumin
- B) Starch
- C) Glucose
- D) Gum

3. **Analyze Each Option**:
- **A) Egg Albumin**: This is a protein and forms a colloidal solution. It does not pass through a semi-permeable membrane easily, so it is not a crystalloid.
- **B) Starch**: Starch is a polysaccharide and also forms a colloidal solution. It cannot pass through a semi-permeable membrane, so it is not a crystalloid.
- **C) Glucose**: Glucose is a simple sugar and forms a true solution. The size of glucose molecules is less than 1 nanometer, allowing it to pass through a semi-permeable membrane. Therefore, glucose is a crystalloid.
- **D) Gum**: Gum is a complex carbohydrate and forms a colloidal solution. It cannot pass through a semi-permeable membrane, so it is not a crystalloid.

4. **Conclusion**:
- Among the options provided, only glucose qualifies as a crystalloid.

### Final Answer:
C) Glucose