Consider the following statements
I. Mercury is a metal. II. Iodine is a metal.. III. Iodine is having shining surface. IV. Mercury is present in liquid state.
Which of the statement(s) given above is/are correct?

Options

A. only II
B. I and Iis
C. I,III and IV
D. II,III and IV

Explanation

To determine which of the statements about mercury and iodine are correct, we will analyze each statement one by one.

### Step 1: Analyze Statement I
**Statement I:** Mercury is a metal.
- **Evaluation:** This statement is correct. Mercury (Hg) is indeed a metal and is unique because it is the only metal that is liquid at room temperature.

### Step 2: Analyze Statement II
**Statement II:** Iodine is a metal.
- **Evaluation:** This statement is incorrect. Iodine (I) is classified as a non-metal. It is not a metal; rather, it is a halogen.

### Step 3: Analyze Statement III
**Statement III:** Iodine has a shining surface.
- **Evaluation:** This statement is correct. Iodine can appear shiny, especially in its solid form, which has a lustrous appearance.

### Step 4: Analyze Statement IV
**Statement IV:** Mercury is present in liquid state.
- **Evaluation:** This statement is correct. As mentioned earlier, mercury is the only metal that is liquid at room temperature.

### Conclusion
Now, we summarize the evaluations:
- Statement I: Correct
- Statement II: Incorrect
- Statement III: Correct
- Statement IV: Correct

Thus, the correct statements are I, III, and IV.

### Final Answer
The correct statements are: I, III, and IV.