1. In which year was cellophane invented?
a) 1930
b) 1990
c) 1908
d) 1900
Discussion
Explanation: Cellophane was first invented by Jacques E. Brandenberger, a Swiss textile engineer in 1908. It is a transparent film which is thin and quite stiff. It is a polymeric film made from regenerated cellulose.
2. When was Nylon invented?
a) 1999
b) 1985
c) 1915
d) 1935
Discussion
Explanation: Nylon, a synthetic polymer, was produced in 1935. Nylon was developed by a research team at DuPont, headed by an American chemist, Wallace H. Carothers. It was made by the chemical synthesis of adipic acid and hexamethylrnrdiamine mainly, by condensation polymerisation.
3. Who is the inventor of PET bottles?
a) Nicholas Appert
b) Peter Durand
c) Nathaniel Wyeth
d) Bryan Donkin
Discussion
Explanation: Pet bottle (also known as plastic soda bottle) was invented by Nathaniel Wyeth in 1973. PET is a kind of polyester, capable of holding carbonated beverages.
4. When was the first pop top aluminium can produced?
a) 1959
b) 1999
c) 1905
d) 1950
Discussion
Explanation: In 1959, also called “pull-tab”. Invented by Ermal Fraze. This eliminated the need for a separate opener tool by attaching an aluminium pull ring lever with a rivet to a scored wedge shaped tab section of can top.
5. When was edible packaging introduced?
a) 2000
b) 2015
c) 2012
d) 2009
Discussion
Explanation: Edible packaging, also called Food wrapped in food, was introduced in 2012. WikiFoods in 2012 along with Stonyfield introduced this novelty to market.
6. Polyethylene is a polymer of __________
a) C2H4
b) C4H6
c) CH4
d) C2H2
Discussion
Explanation: Polyethylene (PE) is a polymer of Ethylene (C2H4). It’s IUPAC name is polyethene or Poly(methylene). It was first synthesized by a German chemist Hans von Pechman in 1898.
7. Which of the following is called poison plastic?
a) PP
b) PET
c) PVC
d) LDPE
Discussion
Explanation: PVC, Polyvinyl Chloride is called poison plastic. It releases many chemicals such as- dioxins, lead, ethylene dichloride, vinyl chloride, which is very harmful for health. High exposure to these chemicals causes diseases such as asthma and other respiratory ailments.
8. Which of the following is not a step in Addition polymerization?
a) Propagation
b) Condensation
c) Termination
d) Initiation
Discussion
Explanation: Condensation is not a step in addition polymerization. Addition polymerization includes three steps, via- initiation, propagation and termination. Condensation polymerization is another kind of polymerization reaction, which includes- joining of two compounds by losing a small molecule (generally a water molecule).
9. Condensation Polymerization is called Chain growth polymerization?
a) True
b) False
Discussion
Explanation: Condensation polymerization is called Step Growth Polymerization. Addition polymerization is called chain growth polymerization. Hence, the answer is false.
10. Styrene is also called as ___________
a) Ethylbenzene
b) Phenylphrene
c) Methylbenzene
d) Vinylpyridine
Discussion
Explanation: Styrene is also known as ethylbenzene. Its chemical formula is C6H5CH=CH2. The polymerization of styrene via addition mechanism. It finds many uses in packaging industry due to some of its attributes like, clarity, hardness and brittleness.