Which polymer is used for making magnetic recording tapes?

Options

A. Dacron
B. Acrilan
C. Glyptal
D. Bakelite

Explanation

To determine which polymer is used for making magnetic recording tapes, let's analyze the options provided:

### Step 1: Identify the Options
The options given are:
- A) Dacron
- B) Acrylon
- C) Glyptol
- D) Bakelite

### Step 2: Analyze Each Option
1. **Dacron**:
- Dacron is a type of polyester fiber.
- It is commonly used in various applications including fabrics and magnetic recording tapes.
- **Conclusion**: Dacron is a strong candidate for the polymer used in magnetic recording tapes.

2. **Acrylon**:
- Acrylon is derived from acrylonitrile, which is used to make synthetic fibers like acrylic.
- It is primarily used for making yarns and clothing items such as sweaters and tracksuits.
- **Conclusion**: Acrylon is not used for magnetic recording tapes.

3. **Glyptol**:
- Glyptol is a resin made from glycol and phthalic acid.
- It is mainly used in paints and coatings for metals.
- **Conclusion**: Glyptol is not used for magnetic recording tapes.

4. **Bakelite**:
- Bakelite is a thermosetting polymer made from phenol and formaldehyde.
- It is used in electrical appliances and kitchenware.
- **Conclusion**: Bakelite is not used for magnetic recording tapes.

### Step 3: Final Conclusion
Based on the analysis of the options, the polymer used for making magnetic recording tapes is **Dacron**.

### Answer:
**Dacron is the polymer used for making magnetic recording tapes.**

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