CELPIP Reading Part 3Reading for Information Practice

A. Discarded bottles and jars can become raw material for new containers because ordinary glass does not lose its basic composition when remelted. Collection systems bring mixed containers from households and businesses to facilities that prepare them for manufacturing. Keeping glass separate from general rubbish reduces breakage contamination and makes valuable material easier to recover. Ceramics, cookware, and window glass require different treatment because their melting behaviour differs from that of container glass. Together, these details place closed-loop recycling of container glass within a broader pattern shaped by the surrounding environment over a meaningful period of time.

B. Machines and workers separate clear, green, and brown pieces when a manufacturer needs consistent colour. Magnets remove steel lids, while screens, air jets, and optical equipment extract labels, metals, and unwanted fragments. Small heat-resistant ceramic pieces are especially troublesome because they may remain solid in the glass furnace. Careful sorting prevents these particles from creating weak spots or defects in newly formed containers. This combination helps explain why sorting and removal of contaminants cannot be understood from one feature alone or from one brief observation.

C. Clean glass is crushed into cullet whose small pieces are easier to blend and feed into a furnace. Manufacturers mix cullet with sand and other mineral ingredients, then heat the batch until it becomes molten. Using cullet lowers the temperature and energy required compared with melting an entirely new mineral batch. Machines cut portions of liquid glass and shape them in moulds before controlled cooling relieves internal stress. For closed-loop recycling of container glass, relationships among these features matter because a change in one may influence several others within the same setting over time.

D. Container glass can be recycled repeatedly when collection and sorting preserve its quality. Local recycling is more efficient because heavy glass requires substantial energy to transport over long distances. Some collected pieces become insulation or road material when colour mixing and contamination prevent bottle-to-bottle use. Preventing unnecessary containers and reusing sound ones can save resources before recycling is needed at all. Viewed together, details about environmental advantages and limits of repeated recycling connect visible characteristics with processes that are less immediately obvious to an ordinary observer at first.

E. Not given in any of the above paragraphs.