19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Assertion: Teflon has high thermal stability and chemical inertness. Reason: Teflon is a thermosetting polymer.
Assertion: Glypal is obtained by condensation polymerization of ethylene glycol and terephthalic acid. Reason: Glyptal is used in the manufacture of fabrics.
Assertion: Olefinic monomers undergo addition polymerisation. Reason: Polymerisation of vinyl chloride is initiated by peroxides/persulphates.
Assertion: Polybutadiene is an example of chain growth polymer. Reason: Copolymerization of butadiene and styrene gives Buna-S.
Assertion: Polytetrafluoroethene is used in making non-stick cookwares Reason: Fluorine has highest electronegativity.
Chloroprene is the monomer unit in:
Which one of the following is a chain growth polymer?
Acrilon is a hard, horny and a high melting material. Which of the following represents its structure ? (a) (b) (c) (d)
The monomer of the polymer is (a)
Assertion: Network polymers are thermosetting. Reason: Network polymers have high molecular mass.
Which is not a macromolecule?
Nylon threads are made up of
CF₂ = CF₂ is a monomer of
Which of the following is a polyamide?
Bakelite is obtained from phenol by reacting with
The formation of which of the following polymers involves hydrolysis reaction?
Which of the following is fully fluorinated polymer?
The monomer unit of given compound is:
Which one of the following monomers gives the polymer neoprene on polymerization? (a) (b) (c) (d)
Which of the following properties shows a gradual decrease with an increase in atomic number across a period in the periodic table?
Consider the following statements: (I) The radius of an anion is larger than that of the parent atom. (II) The ionization energy generally increases with the increasing atomic number in a period. (III) The electronega…
For a given value of n (principal quantum number), ionization energy is highest for
The electronic configurations of the elements X, Y, Z, and J are given below. Which element has the highest metallic character?
An element with lowest ionization energy in their respective period is
Second electron affinity