The element which exists in liquid state for a wide range of temperature and can be used for measuring high temperature is

Options

A. B
B. AI
C. Ga
D. In

Explanation

To solve the question about the element that exists in a liquid state over a wide range of temperatures and can be used for measuring high temperatures, we can follow these steps:

### Step 1: Understand the Question
We need to identify an element that remains liquid over a significant temperature range and is suitable for high-temperature measurements.

### Step 2: Analyze the Options
While the question does not provide specific options, we can consider common elements known for their liquid state at various temperatures.

### Step 3: Research Melting and Boiling Points
We need to find an element with:
- A low melting point (so it can be liquid at room temperature)
- A high boiling point (so it remains liquid at high temperatures)

### Step 4: Identify Gallium
Gallium is known for its unique properties:
- Melting Point: Approximately 30°C
- Boiling Point: Approximately 2240°C

### Step 5: Conclusion
Since gallium has a melting point just above room temperature and a boiling point that allows it to remain liquid at high temperatures, it fits the criteria perfectly. Therefore, the answer is gallium.

### Final Answer
The element which exists in liquid state for a wide range of temperature and can be used for measuring high temperature is **gallium**.

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