Answer :
1. To determine whether a material is lustrous or non-lustrous, you can observe how it reflects light. Lustrous materials appear shiny and reflective, like metals, while non-lustrous materials have a dull or matte appearance, like wood or plastic.
2. To distinguish between a silver plate and a plastic plate, you can perform a few tests. Silver is a metal and will feel cold to the touch, while plastic will be closer to room temperature. You can also tap the plates lightly – silver will produce a ringing sound, while plastic will sound dull. Additionally, you can use a magnet – silver is not magnetic, but plastic will not be affected by a magnet.
3. Examples of objects that can be made from both wood and metal are furniture (such as a desk with a metal frame and a wooden top) and tools (like a hammer with a metal head and a wooden handle).
4. When you place cheese in water, the cheese will float. This happens because cheese has a lower density than water, causing it to float on the surface rather than sink.
