POLYMERS Quiz-10
Dear Readers,
IIT JEE exam which consists of JEE Main and JEE Advanced is one of the most important entrance exams for engineering aspirants. The exam is held for candidates who are aspiring to pursue a career in the field of engineering and technical studies.
Chemistry is important because everything you do is chemistry! Even your body is made of chemicals. Chemical reactions occur when you breathe, eat, or just sit there reading. All matter is made of chemicals, so the importance of chemistry is that it's the study of everything..
Q1. Chloroprene is the repeating unit in: :
Solution
option b
option b
Q2. Which of the following is not a polymer?
Solution
option a
option a
Q3. Which of the following sets contains only copolymers?
Solution
option a
option a
Q4. Which is used in the formation of nylon-66?
Solution
option b
option b
Q5. Nylon-5, 10 can be prepared by:
Solution
option a. Nylon-5, 10 refers to 5-C-atom diamine and 10-C-atom dibasic acid (first numeral refers to diamine and second numeral refers to dicarboxylic acid)
option a. Nylon-5, 10 refers to 5-C-atom diamine and 10-C-atom dibasic acid (first numeral refers to diamine and second numeral refers to dicarboxylic acid)
Q6. Which of the following is a monomer of Teflon?
Solution
option d
option d
Q7.
Statement 1: Bakelite is a thermosetting plastic.
Statement 2: In thermosetting plastics, the polymeric chains are held together by strong covalent bonds.
Solution
option b Bakelite is a thermosetting plastic. These are across linked high polymers formed from their monomers by condensation polymerisation. The chains are held together by strong covalent bonds
option b Bakelite is a thermosetting plastic. These are across linked high polymers formed from their monomers by condensation polymerisation. The chains are held together by strong covalent bonds
Q8.Statement 1: Novolac is soft and has a low melting point
Statement 2: It is a highly cross-linked polymer
Solution
option (c) Novolac is a linear-chain polymer
option (c) Novolac is a linear-chain polymer
Q9. Statement 1: Thermoplastics become soft on heating and hard on cooling.
Statement 2: Thermoplastics are linear polymer and the polymeric chains are held together by weak intermolecular forces.
Solution
option a Reason is the correct explanation of assertion.
option a Reason is the correct explanation of assertion.
Q10.Statement 1: In vulcanization of rubber, sulphur cross links are introduced.
Statement 2: Vulcanization is a free radical initiated chain reaction.
Solution
option c Vulcanization is a process of treating natural rubber with sulphur or some compound of sulphur under heat so, as to modify it properties. The cross linking give mechanical strength to the rubber.
option c Vulcanization is a process of treating natural rubber with sulphur or some compound of sulphur under heat so, as to modify it properties. The cross linking give mechanical strength to the rubber.
