Which of the following is an organo silicon polymer?

Options

A. Silica
B. Silicone
C. Silicon carbide
D. Silicic acid

Answer

To determine which of the given options is an organosilicon polymer, we need to understand what organosilicon polymers are. Organosilicon polymers are compounds that contain carbon-silicon bonds and typically have a structure that includes repeating units of silicon and organic groups.

### Step-by-Step Solution:

1. **Identify the Definition of Organo Silicon Polymers**:
- Organosilicon polymers are organometallic compounds that contain carbon-silicon bonds. They are similar to ordinary organic compounds and often have properties such as being colorless, flammable, hydrophobic, and stable in air.

2. **Evaluate Each Option**:
- **Option 1: Silica (SiO2)**:
- Silica is an oxide of silicon and is not an organosilicon polymer. It does not contain carbon-silicon bonds.
- **Option 2: Silicon**:
- Silicon can form organosilicon polymers with repeating units of the form R2SiO, where R represents an organic group. This structure indicates that silicon is indeed an organosilicon polymer.
- **Option 3: Silicon Carbide (SiC)**:
- Silicon carbide is an inorganic compound and does not contain carbon-silicon bonds in the form of organosilicon polymers. Thus, it is not an organosilicon polymer.
- **Option 4: Silicic Acid (Si(OH)4)**:
- Silicic acid does not qualify as an organosilicon polymer as it does not contain the required carbon-silicon bond structure.

3. **Conclusion**:
- After evaluating all options, the only compound that qualifies as an organosilicon polymer is **Option 2: Silicon**. It contains the necessary carbon-silicon bonds and has the structure of repeating units.

### Final Answer:
The correct answer is **Option 2: Silicon**.