SSC MTS EXAM

Detailed explanation-1: -Most household plastic wrap is made from polyethylene, PVC, or PVDC. These polymers are all derived from simple hydrocarbons such as methane or ethylene, which are produced from natural gas or petroleum.

Detailed explanation-2: -Plastic is not sold as a pure unadulterated substance, but is instead mixed with various chemicals and other materials, which are collectively known as additives.

Detailed explanation-3: -A cling wrap plastic film comprising: a mixture of high pressure-low density polyethylene (HPLDPE), low pressure-low density polyethylene (LPLDPE), and a cling agent in amount between about 0.5 and about 2.5 wt.

Detailed explanation-4: -A material of uniform composition throughout that cannot be mechanically separated into different materials. NOTE 1 Examples of “homogeneous materials” are certain types of plastics, ceramics, glass, metals, alloys, paper, board, resins, and coatings.