Man Made Substances - Free MCQ Practice Test with solutions, UPSC Lucent

Nylon is a synthetic polymer and an example of a man-made substance. It was first produced in the 1930s and is commonly used in the manufacturing of textiles, ropes, and plastics.

PVC is made from the polymerization of vinyl chloride monomers. It is widely used in construction, electrical insulation, and plumbing due to its durability and low cost.

Teflon is a brand name for polytetrafluoroethylene (PTFE), a synthetic fluoropolymer known for its non-stick properties. It is commonly used in cookware coatings.

Kevlar is a strong synthetic fiber that is heat and chemical resistant. It is commonly used in bulletproof vests, tires, and other applications requiring high strength.

Sodium hydroxide, also known as lye or caustic soda, is a key ingredient in the saponification process for making soap.

Freon is a brand name for a group of chlorofluorocarbon (CFC) refrigerants commonly used in older refrigeration and air conditioning systems.

Sodium chloride is the chemical name for common table salt, which is composed of sodium and chlorine ions.

• Saccharin is a man-made artificial sweetener, and it was one of the first synthetic sweeteners discovered.
• Unlike Stevia, which is a natural sweetener derived from a plant, saccharin is entirely synthetic.
• Aspartame and Sucralose are also synthetic sweeteners, but saccharin holds the distinction of being the first widely used artificial sweetener.

Glass fiber, also known as fiberglass, is primarily made of thin strands of glass that are woven into a fabric-like material. It is commonly used in insulation, composites, and reinforcements.

Cellulose is the primary component of photographic film. It is a complex carbohydrate found in the cell walls of plants.

Polystyrene is the primary component of Styrofoam, a lightweight and insulating material commonly used in packaging and disposable food containers.

Silicon is a semiconductor material commonly used in the production of computer chips and other electronic devices.

Polyethylene is the primary component of polyester, a synthetic fiber widely used in textiles, clothing, and bottles.

Silicone is a synthetic compound made of silicon, oxygen, carbon, and hydrogen. It has a wide range of applications, including as a lubricant and electrical insulator.

Methane is the main component of natural gas, a fossil fuel used for heating, cooking, and electricity generation.

Phosphorus-based compounds, such as organophosphates, are commonly used as flame retardants in textiles to reduce the flammability of materials.

Isocyanates are the primary components of polyurethane foam, which is used in a variety of applications, including insulation, cushioning, and furniture manufacturing.

Acetone is a common solvent used in nail polish removers due to its ability to dissolve nail polish quickly.

Cellulose is the primary component of cellophane, a transparent and biodegradable film used for packaging and wrapping.

PET is a thermoplastic polymer commonly used in the production of plastic bottles and food containers due to its strength and clarity.