Of the following the commonly used as a laboratory desiccator is

Options

A. `Na_(2)CO_(3)`
B. `CaCl_(2)`
C. `NaCl`
D. None of the above

Answer

To solve the question regarding which substance is commonly used as a laboratory desiccator, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of a Desiccator**:
- A desiccator is a sealed container used to preserve moisture-sensitive items. It contains a drying agent that absorbs moisture from the air inside the container.

2. **Identify Common Desiccants**:
- Common desiccants include substances like silica gel, anhydrous calcium chloride (CaCl2), and phosphorus pentoxide (P2O5). These substances are effective at absorbing moisture.

3. **Focus on the Options Provided**:
- The question provides multiple options (A, B, C, D). We need to evaluate which of these options is a commonly used desiccant.

4. **Evaluate the Options**:
- Among the options, we need to identify which one is known for its effectiveness in drying and is widely used in laboratories.

5. **Select the Correct Answer**:
- Anhydrous calcium chloride (CaCl2) is a well-known desiccant used in laboratories due to its ability to absorb moisture effectively. Therefore, if option B corresponds to anhydrous calcium chloride, it is the correct answer.

### Final Answer:
- The commonly used laboratory desiccator is **Anhydrous Calcium Chloride (CaCl2)**, which corresponds to **Option B**.

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