Question

Why most of laboratory apparatus are made of glass or plastic 

Answer 1

Glass are transparent 
One is able to see reaction take place in them
One can see amount of  substance held in them 

Answer 2

For easy wash
For easy visibility 

Answer 3

Do not  react with apparatus 

Answer 4

Glass Apparatus do not react with most Chemicals. 

Answer 5

Because they don't react with heat

Answer 6

Most of the apparatus do not react with chemicals

Answer 7

Glasses are unreactive with chemicals 

Answer 8

For easy cleaning                                   easy visibility, fer future reference 

Answer 9

To enable visibility when you want to identify the chemical

Answer 10

They are easy to clean
Observations are taken easier