Cinnabar is an ore of

Options

A. Hg
B. Ag
C. Cu
D. Fe

Explanation

To solve the question "Cinnabar is an ore of," we can follow these steps:

### Step 1: Identify Cinnabar
Cinnabar is a mineral that is known to be an ore. An ore is a naturally occurring solid material from which a metal or valuable mineral can be extracted profitably.

**Hint:** Think about what cinnabar is and its characteristics.

### Step 2: Determine the Chemical Composition
Cinnabar has a specific chemical formula, which is HgS. This indicates that it is composed of mercury (Hg) and sulfur (S).

**Hint:** Look for the elements present in the chemical formula of cinnabar.

### Step 3: Identify the Metal
From the chemical formula HgS, we can identify that the metal present is mercury (Hg). Therefore, cinnabar is an ore of mercury.

**Hint:** Consider what metal corresponds to the chemical symbol Hg.

### Step 4: Conclude the Answer
Based on the above steps, we can conclude that cinnabar is an ore of mercury.

**Final Answer:** Cinnabar is an ore of mercury.