Answer:
1.The equipment is broken by someone.
2.Firstly the liguid must be heated.
3.Safety glasses must be worn in laboratory.
4.Science competition is won by a very young student.
5.A brilliant scientist is Dr liu .( this 5 no ans might be wrong)
third person view is a detached person, this can be used for many reasons. it can be used to not tell you exactly what the characters are thinking and feels and rather to describe the action more.
As far as I can tell, this sentence has proper grammar.
