Which of the following is/are NOT recyclable material(s)?
Melamine
Recycling is a process to convert something from scratch to a usable form. In recycling, the existing resources are altered to a usable form which consumes approximately 80-90% less energy than creation.
Paper, polyvinyl chloride (thermoplastic) and aluminium metal can be recycled easily. Melamine (thermosetting plastic) cannot be recycled once it is heated and solidified on cooling. The used motor oil can't be recycled to reusable form. It is burnt to obtain energy.