1. (a) Explain what is meant by term ‘nanotechnology’.(b) Describe the basic structure of a nanotube in terms of graphene and buckminsterfullerene.(c) Discuss reasons why the rise in the use of nanoparticles may be hazardous to human health.2. State two different reasons why nanocatalysts can be extremely efficient.3. Explain why nanotubes are good conductors of electricity and heat.