Question

1.how is an eraser made?
2.how is glass manufactures

Answer 1

1.with help of  rubber tree (if you want more watch how its made in you tube )
2.do the same thing

Answer 2

Hi mate!!!

Here is your answer

1.Once the natural or synthetic rubber is mixed with pigments, vegetable oil, pumice, sulfur, and other additional ingredients, the mixture is heated and the erasers are formed. In order to make eraser plugs that will be attached to the ends of pencils, the rubber mixture is extruded and cut into plugs.

2 .In order to make clear glass, the right set of raw materials is required. This consists of silica sand (SiO2), sodium oxide (Na2O) from soda ash, calcium oxide (CaO) from limestone/dolomite, dolomite (MgO), and feldspar (Al2O3).

Thanks for asking...