EVERYDAY SCIENCE

SCIENCE

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
____ are found in the form of liquids or solids.
A
Polythenes
B
Nylons
C
Silicones
D
Polyurethanes
Explanation: 

Detailed explanation-1: -Silicone is easy to customize and mold and comes in a variety of forms (liquid, solid or sheet) depending on the molding or fabrication process and specific use.

Detailed explanation-2: -Silicon makes up 27.7% of the Earth’s crust by mass and is the second most abundant element (oxygen is the first). It does not occur uncombined in nature but occurs chiefly as the oxide (silica) and as silicates. The oxide includes sand, quartz, rock crystal, amethyst, agate, flint and opal.

Detailed explanation-3: -Silicones are used in sealants, adhesives, lubricants, medicine, cooking utensils, thermal insulation, and electrical insulation. Some common forms include silicone oil, silicone grease, silicone rubber, silicone resin, and silicone caulk.

Detailed explanation-4: -Liquid Silicone Rubber (LSR) is a two-component system, where long polysiloxane chains are reinforced with specially treated silica. Component A contains a platinum catalyst and Component B contains methylhydrogensiloxane as a cross-linker and an alcohol inhibitor.

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