Tasar silk fibre is produced by which silkworm species?

The silk produced by spiders is called :

At which stage in its life cycle, does the silkworm yield the fibre of commerce?

What is the ‘fibre’ used to make bulletproof jackets?

Light weight bullet proof helmets and jackets use which of the following fibres for their production ?

Bakelite is thermosetting plastics which is obtained from Phenol + ____?