I want to make a copper vessel. Which gives the below mentioned test ,only by applying few chemicals on it. The tests are 1) when a needle is brought over the vessel,it should repel at 90 degree,2) when a torch with 2.4v filament bulb is switched on at a

Creating a copper vessel that meets the described tests involves manipulating static electricity and magnetic fields, rather than traditional chemical processes. The tests you mentioned suggest a focus on creating a charged or magnetized state, rather than producing a straightforward copper object. Here's a breakdown of how you might approach each test: ### 1. Testing for Repulsion with a Needle To create a situation where a needle is repelled at a 90-degree angle, you would need to create a charged state in the copper vessel. This can be achieved through: - **Chemical Requirements**: - You can use materials that can produce static electricity, such as rubbing balloons or a plastic rod with a cloth. - **Process**: 1. **Charge the Copper Vessel**: Rub the copper vessel with a dry cloth or a balloon. This will transfer electrons and charge the vessel. 2. **Test the Needle**: Bring a small metal needle or a pin close to the vessel to see if it repels due to the electrostatic force. ### 2. Breaking a Filament Bulb To cause a 2.4V filament bulb to break using static electricity or induced electric fields, you would ideally want a strong static charge or a rapidly changing magnetic field. - **Chemical Requirements**: - You need a strong source of electrical charge. Some devices to consider include a Van de Graaff generator or a similar electrostatic generator. - **Process**: 1. **Generate High Voltage**: Use a Van de Graaff generator to create a high voltage at a distance. You can also consider charging your copper vessel to induce a high voltage at a distance. 2. **Bring the Copper Vessel Near the Bulb**: Slowly bring the charged copper vessel near the filament bulb while being observant of any effects it might have on the filament. ### 3. Attracting Dehusked Rice To attract dehusked rice to a copper vessel through static electricity: - **Chemical Requirements**: - Rubbing cloth or material that can create static electricity. - **Process**: 1. **Static Charge**: Again, charge the copper vessel by rubbing it with a cloth. Be sure to do this in a dry environment, as humidity can reduce static charge. 2. **Place Rice at a Distance**: Position the dehusked rice approximately 8 inches away from the charged vessel and observe for any attraction. ### Important Notes: - **Safety Precautions**: Exercise caution when working with electricity to ensure safety. High voltages can be dangerous. - **Environmental Factors**: Static electricity can be significantly influenced by humidity. Dry conditions enhance the experience of static and attraction. - **Limitations**: Achieving significant effects might be challenging with just simple electrical charging. You may want to explore available electrostatic devices for more substantial applications. This guide is a conceptual discussion rather than a definitive procedure, as ensuring repeatable results will require experimentation and adjustments. Good luck, and be careful in your explorations!