Polymers & Everyday Chemistry · JEE Main previous year questions

Correct statements among a to d regarding silicones are : (a)   They are polymers with hydrophobic character. (b)   They are biocompatible. (c)   In general, they have high thermal stability and low dielectric strength. (d)   Usually, they are resistant to oxidation and used as greases.

1. A.(a), (b), (c) and (d)
2. B.(a), (b) and (c) only
3. C.(a) and (b) only
4. D.(a), (b) and (d) only

1. A.
2. B.
3. C.
4. D.

1. A.
2. B.
3. C.
4. D.

The reason for “drug induced poisoning” is :

1. A.Binding reversibly at the active site of the enzyme
2. B.Bringing conformational change in the binding site of enzyme
3. C.Binding irreversibly to the active site of the enzyme
4. D.Binding at the allosteric sites of the enzyme

Which of the following is an anionic detergent ?

1. A.Sodium stearate
2. B.Sodium lauryl sulphate
3. C.Cetyltrimethyl ammonium bromide
4. D.Glyceryl oleate

Which of the following statements about low density polythene is FALSE ?

1. A.Its synthesis requires high pressure.
2. B.It is a poor conductor of electricity.
3. C.Its synthesis requires dioxygen or a peroxide initiator as a catalyst.
4. D.It is used in the manufacture of buckets, dust-bins etc.

Match the catalysts to the correct processes : | | Catalyst | | Process | | :--- | :--- | :--- | :--- | | (A) | $\mathrm{TiC}{\mathrm{l}}_3$ | (i) | Wacker process | | (B) | $\mathrm{PdC}{\mathrm{l}}_2$ | (ii) | Ziegler - Natta polymerization | | (C) | $\mathrm{CuC}{\mathrm{l}}_2$ | (iii) | Contact process | | (D) | ${\mathrm{V}}_2{\mathrm{O}}_5$ | (iv) | Deacon's process |

1. A.$(A)-(ii),(B)-(iii),(C)-(iv),(D)-(i)$
2. B.$(A)-(iii),(B)-(i),(C)-(ii),(D)-(iv)$
3. C.$(A)-(iii),(B)-(ii),(C)-(iv),(D)-(i)$
4. D.$(A)-(ii),(B)-(i),(C)-(iv),(D)-(iii)$

Which of the following compounds is not an antacid?

1. A.Cimetidine
2. B.Ranitidine
3. C.Phenelzine
4. D.Aluminium hydroxide

Which polymer is used in the manufacture of paints and lacquers?

1. A.Glyptal
2. B.Polypropene
3. C.Poly vinyl chloride
4. D.Bakelite

Which one is classified as a condensation polymer?

1. A.Teflon
2. B.Acrylonitrile
3. C.Dacron
4. D.Neoprene

Amylopectin is a polymer of

1. A.$\alpha$-D-glucose
2. B.amino acid
3. C.$\beta$-D-glucose
4. D.amylase.

Synthetic polymer bakelite can be prepared from following compounds

1. A.Styrene and vinyl chloride
2. B.Acrylonitrile and vinyl chloride
3. C.Adipic acid and ethylene glycol
4. D.Phenol and formaldehyde

Which one of the following is a chain growth polymerisation?

1. A.Nucleic acid
2. B.Polystyrene
3. C.Protein
4. D.Starch

Which one of the following compounds is an antifertility drug?

1. A.Aspirin
2. B.Chloromycetin
3. C.Saheli
4. D.Penicillin

The polymer containing strong intermolecular forces e.g. hydrogen bonding, is

1. A.teflon
2. B.nylon 6,6
3. C.polystyrene
4. D.natural rubber

1. A.
2. B.
3. C.
4. D.

Which one of the following types of drugs reduces fever?

1. A.Analgesic
2. B.Antipyretic
3. C.Antibiotic
4. D.Tranquiliser

Which of the following is fully fluorinated polymer?

1. A.Neoprene
2. B.Teflon
3. C.Thiokol
4. D.PVC

Polymer formation from monomers starts by

1. A.condensation reaction between monomers
2. B.coordinate reaction between monomers
3. C.conversion of monomer to monomer ions by protons
4. D.hydrolysis of monomers