Most sugars are dextrorotatory which means they

Options

A. Tilt light to right
B. Rotate polarised light to right
C. Tilt light to left
D. Rotate polarised light to left.

Answer

To answer the question "Most sugars are dextrorotatory which means they", we need to understand the concept of optical activity in sugars.

### Step-by-Step Solution:

1. **Understanding Dextrorotatory**:
- The term "dextrorotatory" refers to the ability of a substance to rotate polarized light to the right. This is a characteristic property of certain sugars and other organic compounds.

2. **Polarized Light**:
- Polarized light is light that has been filtered so that all of its waves vibrate in the same direction. When a substance is placed in the path of polarized light, it can affect the direction of the light's vibration.

3. **Asymmetric Carbons**:
- Sugars are often composed of asymmetric (or chiral) carbons. These are carbon atoms that are bonded to four different groups. The presence of these asymmetric carbons allows sugars to have different spatial arrangements (enantiomers), which can affect their optical activity.

4. **Optical Activity**:
- When polarized light passes through a solution of a sugar, if the sugar is dextrorotatory, the light will be rotated to the right (clockwise). Conversely, if it is levorotatory, the light will be rotated to the left (counterclockwise).

5. **Conclusion**:
- Therefore, since most sugars are dextrorotatory, the correct answer to the question is that they "rotate polarized light to the right".

### Final Answer:
Most sugars are dextrorotatory which means they **rotate polarized light to the right**.

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