Which one of the following pairs is mis-matched?

Options

A. Jatropha : Biodiesel
B. Ringal : Timber
C. Oak : Fodder
D. Pine : Resin

Answer

To determine which pair is mismatched, we will analyze each option provided:

1. **Jatropha - Biodiesel**:
- Jatropha is a plant that is often genetically modified to produce oil that can be converted into biodiesel. This pair is correctly matched.

2. **Ringal - Timber**:
- Ringal (or Ringal bamboo) is a type of bamboo that is hollow inside. While it is used for various purposes such as shuttering and making baskets, it is not suitable for making timber, which requires solid wood. Therefore, this pair is mismatched.

3. **Oak - Fodder**:
- Oak trees can produce leaves that can be used as fodder for animals. This pair is correctly matched.

4. **Pine - Resin**:
- Pine trees produce a viscous liquid known as resin, which can be harvested for various uses. This pair is also correctly matched.

After analyzing all the options, the mismatched pair is **Ringal - Timber**.

### Steps Summary:
1. Analyze the first pair: Jatropha and Biodiesel - matched.
2. Analyze the second pair: Ringal and Timber - mismatched.
3. Analyze the third pair: Oak and Fodder - matched.
4. Analyze the fourth pair: Pine and Resin - matched.
5. Conclude that the mismatched pair is Ringal - Timber.