In glass manufacturing process, annealing is done for the prevention of
Correct answer: A. Relieving internal stress
- A. Relieving internal stress
- B. Removing air bubbles
- C. Eliminating impurities
- D. Enhancing surface shine
Explanation
Annealing is a vital process in glass manufacturing aimed at relieving internal stresses that develop during cooling. This controlled cooling allows the glass to stabilize, reducing the risk of shattering under thermal stress. While removing air bubbles is essential, it occurs earlier in the production stages, not during annealing. Similarly, eliminating impurities takes place during the refining stage, and enhancing surface shine is achieved through separate polishing or coating processes, making those options incorrect.
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About Crystalline Solids
Crystalline solids contain particles arranged in a regular repeating lattice described by a unit cell. Their study includes coordination number, packing efficiency, density, anisotropy, cleavage, polymorphism and common crystal systems, along with ionic, molecular, covalent network and metallic crystals. Crystalline order differs from the random arrangement of amorphous solids.
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