which solution show tyndall effect
The Tyndall effect is shown by colloidal solutions like milk and starch solution, not by true solutions like salt solution or copper sulphate solution.
🌟 Quick Scoop: which solution show Tyndall effect?
If you shine a beam of light (like a torch or laser) through different mixtures, only some will make the path of light visible. Those are the ones showing the Tyndall effect.
1. What is the Tyndall effect?
- The scattering of light by tiny particles in a mixture so that the light beam becomes visible.
- It is a characteristic property of colloids (and some suspensions), not of true solutions.
Think of car headlights in fog at night – you can see the “beam” because fog droplets scatter the light.
2. Which solutions show Tyndall effect?
Among common school-level examples:
- Milk – Yes, shows Tyndall effect (it is a colloidal solution of fat in water).
- Starch solution – Shows Tyndall effect because it behaves as a colloid; a beam of light is visible through it.
- Salt solution (salt in water) – Does not show Tyndall effect; it is a true solution with particles too small to scatter light.
- Copper sulphate solution – Also a true solution, so it does not show Tyndall effect.
In many textbook-type questions like “Which of the following will show Tyndall effect: salt solution, milk, copper sulphate solution, starch solution?”, the correct answers are milk and starch solution.
3. True solution vs colloid (mini table)
| Type of mixture | Example | Tyndall effect? |
|---|---|---|
| True solution | Salt in water, copper sulphate in water | No visible beam; particles too small. |
| Colloid | Milk, starch solution, fog, dust in air | Yes, visible light path due to scattering. |
4. Simple activity you can imagine
- Take three glasses:
- Salt solution in water
- Starch solution in water
- Milk in water
- Darken the room and pass a laser/torch beam through each glass.
- You will see the beam clearly in starch solution and milk , but not in salt solution.
This small “experiment in your head” matches how the Tyndall effect is demonstrated in school labs and videos.
TL;DR
- Tyndall effect is shown by colloidal solutions.
- In typical exam options, the solutions that show Tyndall effect are milk and starch solution ; salt solution and copper sulphate solution do not show it.
Information gathered from public forums or data available on the internet and portrayed here.