8) Arrange the following steps in a sequence for the manufacture of borosilicate glass.
8) Arrange the following steps in a sequence for the manufacture of borosilicate glass.
The correct option is A 321465
Explanation for the correct process -
The steps in sequence for the manufacture of borosilicate glass are shown below-
3) Mixing up sand, limestone, Sodium carbonate, and Aluminium oxide in required proportions.
2) Addition of broken pieces of glass - These broken pieces of glass are known as cullet and they undergo melting even at low temperatures.
1) Addition of ingredients like red lead, Aluminium oxide, Manganese oxide, Chromium oxide, etc. - These are added to improve some specific characteristics.
4) Melting mixture in a glass tank furnace or pot furnace.
6) Blowing of glass - This technique is used for the manufacture of laboratory glass.
5) Annealing process.- Annealing refers to a process where a change in physical characteristics is undergone due to heating.
Hence option ‘A’ is the correct step in a sequence for the manufacture of Borosilicate glass.
321465
Explanation for the correct process -
The steps in sequence for the manufacture of borosilicate glass are shown below-
3) Mixing up sand, limestone, Sodium carbonate, and Aluminium oxide in required proportions.
2) Addition of broken pieces of glass - These broken pieces of glass are known as cullet and they undergo melting even at low temperatures.
1) Addition of ingredients like red lead, Aluminium oxide, Manganese oxide, Chromium oxide, etc. - These are added to improve some specific characteristics.
4) Melting mixture in a glass tank furnace or pot furnace.
6) Blowing of glass - This technique is used for the manufacture of laboratory glass.
5) Annealing process.- Annealing refers to a process where a change in physical characteristics is undergone due to heating.
Hence option ‘A’ is the correct step in a sequence for the manufacture of Borosilicate glass.
