Q. To keep the hot glass item’s finishing and transparency , they go through a process called annealing. This process involves _______?
Answer: cooled slowly and uniformly under controlled environment
Notes: The correct answer is "cooled slowly and uniformly under controlled environment." Annealing is a heat treatment process used in glassmaking to relieve internal stresses and improve transparency. By cooling glass slowly and uniformly, it prevents the formation of defects and maintains its structural integrity. This process is crucial for achieving high-quality glass products, as rapid cooling can lead to cracks and uneven surfaces.