Metal which is present in liquid state at room temperature is

Options

A. Hg
B. Ga
C. (a) and (b)
D. None of these

Explanation

To solve the question "Metal which is present in liquid state at room temperature is?", we will analyze the options provided and determine which metals exist in a liquid state at room temperature.

### Step-by-Step Solution:

1. **Identify the Metals**:
The options given are:
- A) Mercury (Hg)
- B) Gallium (Ga)
- C) Anb (not a recognized metal)
- D) Nanon (not a recognized metal)

2. **Check the Properties of Each Metal**:
- **Mercury (Hg)**:
- Mercury is known to be a liquid at room temperature (approximately 20-25 degrees Celsius). Its melting point is -38.83 degrees Celsius, which allows it to remain in liquid form at room temperature.
- **Gallium (Ga)**:
- Gallium has a melting point of about 29.76 degrees Celsius. While it is solid at room temperature, it can melt in the palm of your hand due to body temperature (37 degrees Celsius), making it liquid under certain conditions.
- **Anb**:
- This does not correspond to any known metal and can be disregarded.
- **Nanon**:
- This also does not correspond to any known metal and can be disregarded.

3. **Conclusion**:
- The metals that exist in a liquid state at room temperature are Mercury (Hg) and Gallium (Ga). Therefore, the correct answer is both A (Hg) and B (Ga).

### Final Answer:
The metals which are present in a liquid state at room temperature are **Mercury (Hg)** and **Gallium (Ga)**.

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