Consider the following statements about metalloids.
Metalloids Are good conductors of heat and electricity.
Si is used as a semiconductor.
Select the correct statement.

Options

A. Only I
B. Only II
C. Both I and II
D. None of the above

Answer

To solve the question regarding the statements about metalloids, we will analyze each statement step by step.

### Step 1: Analyze the First Statement
The first statement claims that "metalloids are good conductors of heat and electricity."
- **Explanation**: Metalloids have properties that are intermediate between metals and non-metals. Generally, they are not considered good conductors; instead, they are usually classified as poor conductors of heat and electricity. Therefore, this statement is **incorrect**.

### Step 2: Analyze the Second Statement
The second statement claims that "Si (silicon) is used as a semiconductor."
- **Explanation**: Silicon is indeed a well-known semiconductor material. Semiconductors have conductivity that falls between that of conductors (like metals) and insulators (like non-metals). Silicon is widely used in electronic devices due to its semiconductor properties. Therefore, this statement is **correct**.

### Step 3: Conclusion
Now, we need to determine which of the statements are correct based on our analysis:
- The first statement is incorrect.
- The second statement is correct.

Thus, the correct answer is that **only the second statement is correct**.

### Final Answer
The correct option is: **Only statement two is correct.**

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