Polymers & Everyday Chemistry · JEE Main previous year questions

2022 29 questions

1. Q792022 · 28 Jul 2022 · Shift 2
   
   1. A.A-II, B-III, C-IV, D-I
   2. B.A-III, B-II, C-IV, D-I
   3. C.A-III, B-I, C-IV, D-II
   4. D.A-I, B-III, C-IV, D-II
   Show answer

   Answer: B

2. Q802022 · 28 Jul 2022 · Shift 2

   Two statements in respect of drug-enzyme interaction are given below Statement I : Action of an enzyme can be blocked only when an inhibitor blocks the active site of the enzyme. Statement II : An inhibitor can form a strong covalent bond with the enzyme. In the light of the above statements, choose the correct answer from the options given below

   1. A.Both Statement I and Statement II are true
   2. B.Both Statement I and Statement II are false
   3. C.Statement I is true but Statement II is false
   4. D.Statement I is false but Statement II is true
   Show answer

   Answer: D

3. Q792022 · 27 Jul 2022 · Shift 1

   Match List I with List II. | List I Polymers | | List II Commercial names | | :--- | :--- | :--- | | (A) Phenol-formaldehyde resin | (I) | Glyptal | | (B) Copolymer of 1,3-butadiene and sterene | (II) | Novolac | | (C) Polyester of glycol and phthalic acid | (III) | Buna-S | | (D) Polyester of glycol and terephthalic acid | (IV) | Dacron | Choose the correct answer from the options given below:

   1. A.A-II, B-III, C-IV, D-I
   2. B.A-II, B-III, C-I, D-IV
   3. C.A-II, B-I, C-III, D-IV
   4. D.A-III, B-II, C-IV, D-I
   Show answer

   Answer: B

4. Q802022 · 27 Jul 2022 · Shift 1
   
   1. A.A-IV, B-III, C-II, D-I
   2. B.A-III, B-I, C-II, D-IV
   3. C.A-III, B-IV, C-I, D-II
   4. D.A-III, B-I, C-IV, D-II
   Show answer

   Answer: C

5. Q792022 · 27 Jul 2022 · Shift 2

   Match List - I with List - II. $$\begin{array}{llll}& \begin{array}{l}\text{List - I}\\ \text{(Polymer)}\end{array}& & \begin{array}{l}\text{List - II}\\ \text{(Monomer)}\end{array}\\ \text{(A)}& \text{Neoprene}& \text{(I)}& \text{Acrylonitrile}\\ \text{(B)}& \text{Teflon}& \text{(II)}& \text{Chloroprene}\\ \text{(C)}& \text{Acrilan}& \text{(III)}& \text{Tetrafluoroethene}\\ \text{(D)}& \text{Natural rubber}& \text{(IV)}& \text{Isoprene}\end{array}$$ Choose the correct answer from the options given below :

   1. A.(A) – (II), (B) – (III), (C) – (I), (D) – (IV)
   2. B.(A) – (II), (B) – (I), (C) – (III), (D) – (IV)
   3. C.(A) – (II), (B) – (I), (C) – (IV), (D) – (III)
   4. D.(A) – (I), (B) – (II), (C) – (III), (D) – (IV)
   Show answer

   Answer: A

6. Q802022 · 27 Jul 2022 · Shift 2

   Which of the following enhances the lathering property of soap?

   1. A.Sodium stearate
   2. B.Sodium carbonate
   3. C.Sodium rosinate
   4. D.Trisodium phosphate
   Show answer

   Answer: C

7. Q802022 · 26 Jul 2022 · Shift 1

   Stearic acid and polyethylene glycol react to form which one of the following soap/s detergents ?

   1. A.Cationic detergent
   2. B.Soap
   3. C.Anionic detergent
   4. D.Non-ionic detergent
   Show answer

   Answer: D

8. Q792022 · 25 Jul 2022 · Shift 2

   Match List I with List II : | List I | List II | | :--- | :--- | | (A) Nylon 6, 6 | (I) Buckets | | (B) Low density polythene | (II) Non-stick utensils | | (C) High density polythene | (III) Bristles of brushes | | (D) Teflon | (IV) Toys | Choose the correct answer from the options given below :

   1. A.A-III, B-I, C-IV, D-II
   2. B.A-III, B-IV, C-I, D-II
   3. C.A-II, B-I, C-IV, D-III
   4. D.A-II, B-IV, C-I, D-III
   Show answer

   Answer: B

9. Q802022 · 25 Jul 2022 · Shift 2

   Some drugs bind to a site other than the active site of an enzyme. This site is known as

   1. A.non-active site
   2. B.allosteric site
   3. C.competitive site
   4. D.therapeutic site
   Show answer

   Answer: B

10. Q802022 · 30 Jun 2022 · Shift 1
    
    1. A.(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
    2. B.(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
    3. C.(a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
    4. D.(a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
    Show answer

    Answer: C

11. Q902022 · 30 Jun 2022 · Shift 1· Numerical answer

    How many of the following drugs belong to the tranquilizer class _____________ ? Veronal, Luminal, Propanal, Seconal

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    Answer: 3

12. Q792022 · 28 Jun 2022 · Shift 2

    Given below are two statements, one is Assertion (A) and other is Reason (R). Assertion (A) : Natural rubber is a linear polymer of isoprene called cis-polyisoprene with elastic properties. Reason (R) : The cis-polyisoprene molecules consist of various chains held together by strong polar interactions with coiled structure. In the light of the above statements, choose the correct one from the options given below :

    1. A.Both (A) and (R) are true and (R) is the correct explanation of (A).
    2. B.Both (A) and (R) are true but (R) is not the correct explanation of (A).
    3. C.(A) is true but (R) is false.
    4. D.(A) is false but (R) is true.
    Show answer

    Answer: C

13. Q802022 · 28 Jun 2022 · Shift 2
    
    1. A.
    2. B.
    3. C.
    4. D.
    Show answer

    Answer: C

14. Q752022 · 27 Jun 2022 · Shift 1

    Match List - I with List - II. $$\begin{array}{llll}& \text{List - I (Si-Compounds)}& & \text{List - II (Si-Polymeric/Other Products)}\\ \text{(A)}& (\mathrm{C}{\mathrm{H}}_3{)}_4\mathrm{Si}& \text{(I)}& \text{Chain Silicone}\\ \text{(B)}& (\mathrm{C}{\mathrm{H}}_3)\mathrm{Si}(\mathrm{OH}{)}_3& \text{(II)}& \text{Dimeric Silicone}\\ \text{(C)}& (\mathrm{C}{\mathrm{H}}_3{)}_2\mathrm{Si}(\mathrm{OH}{)}_2& \text{(III)}& \text{Silane}\\ \text{(D)}& (\mathrm{C}{\mathrm{H}}_3{)}_3\mathrm{Si}(\mathrm{OH})& \text{(IV)}& \text{2D - Silicone}\end{array}$$ Choose the correct answer from the options given below :

    1. A.(A) - (III), (B) - (II), (C) - (I), (D) - (IV)
    2. B.(A) - (IV), (B) - (I), (C) - (II), (D) - (III)
    3. C.(A) - (II), (B) - (I), (C) - (IV), (D) - (III)
    4. D.(A) - (III), (B) - (IV), (C) - (I), (D) - (II)
    Show answer

    Answer: D

15. Q792022 · 27 Jun 2022 · Shift 1

    Match List - I with List - II $$\begin{array}{llll}& \text{List - I (Polymer)}& & \text{List - II (Used in)}\\ \text{(A)}& \text{Bakelite}& \text{(I)}& \text{Radio and television cabinets}\\ \text{(B)}& \text{Glyptal}& \text{(II)}& \text{Electrical switches}\\ \text{(C)}& \text{PVC}& \text{(III)}& \text{Paints and Lacquers}\\ \text{(D)}& \text{Polystyrene}& \text{(IV)}& \text{Water pipes}\end{array}$$ Choose the correct answer from the options given below :

    1. A.(A) - (II), (B) - (III), (C) - (IV), (D) - (I)
    2. B.(A) - (I), (B) - (II), (C) - (III), (D) - (IV)
    3. C.(A) - (IV), (B) - (III), (C) - (II), (D) - (I)
    4. D.(A) - (II), (B) - (III), (C) - (I), (D) - (IV)
    Show answer

    Answer: A

16. Q802022 · 27 Jun 2022 · Shift 1
    
    1. A.(A) - (III), (B) - (II), (C) - (IV), (D) - (I)
    2. B.(A) - (IV), (B) - (II), (C) - (III), (D) - (I)
    3. C.(A) - (IV), (B) - (III), (C) - (II), (D) - (I)
    4. D.(A) - (III), (B) - (IV), (C) - (I), (D) - (II)
    Show answer

    Answer: B

17. Q792022 · 27 Jun 2022 · Shift 2

    Which is true about Buna-N?

    1. A.It is a linear polymer of 1, 3-butadiene.
    2. B.It is obtained by copolymerization of 1, 3-butadiene and styrene.
    3. C.It is obtained by copolymerization of 1, 3-butadiene and acrylonitrile.
    4. D.The suffix N in Buna-N stands for its natural occurrence.
    Show answer

    Answer: C

18. Q802022 · 27 Jun 2022 · Shift 2

    Match List-I with List-II | | List-I | | List-II | |---|---|---|---| | (A) | Antipyretic | I. | Reduces pain | | (B) | Analgesic | II. | Reduces stress | | (C) | Tranquilizer | III. | Reduces fever | | (D) | Antacid | IV. | Reduces acidity (stomach) | Choose the correct answer from the options given below :

    1. A.A-III, B-I, C-II, D-IV
    2. B.A-III, B-I, C-IV, D-II
    3. C.A-I, B-IV, C-II, D-III
    4. D.A-I, B-III, C-II, D-IV
    Show answer

    Answer: A

19. Q792022 · 26 Jun 2022 · Shift 1

    Which of the following sets are correct regarding polymer? (A) Copolymer : Buna-S (B) Condensation polymer : Nylon-6,6 (C) Fibres : Nylon-6,6 (D) Thermosetting polymer : Terylene (E) Homopolymer : Buna-N Choose the correct answer from given options below :

    1. A.(A), (B) and (C) are correct
    2. B.(B), (C) and (D) are correct
    3. C.(A), (C) and (E) are correct
    4. D.(A), (B) and (D) are correct
    Show answer

    Answer: A

20. Q802022 · 26 Jun 2022 · Shift 2
    
    1. A.
    2. B.
    3. C.
    4. D.
    Show answer

    Answer: B

21. Q792022 · 25 Jun 2022 · Shift 1

    Using very little soap while washing clothes, does not serve the purpose of cleaning of clothes, because :

    1. A.soap particles remain floating in water as ions.
    2. B.the hydrophobic part of soap is not able to take away grease.
    3. C.the micelles are not formed due to concentration of soap, below its CMC value.
    4. D.colloidal structure of soap in water is completely disturbed.
    Show answer

    Answer: C

22. Q802022 · 25 Jun 2022 · Shift 2

    An antiseptic dettol is a mixture of two compounds 'A' and 'B' where A has $6\pi$ electrons and B has $2\pi$ electrons. What is 'B'?

    1. A.Bithionol
    2. B.Terpineol
    3. C.Chloroxylenol
    4. D.Chloramphenicol
    Show answer

    Answer: B

23. Q902022 · 25 Jun 2022 · Shift 2· Numerical answer

    The Novolac polymer has mass of 963 g. The number of monomer units present in it are

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    Answer: 9

24. Q792022 · 24 Jun 2022 · Shift 2

    Which of the following is not an example of a condensation polymer?

    1. A.Nylon 6,6
    2. B.Dacron
    3. C.Buna-N
    4. D.Silicone
    Show answer

    Answer: C

25. Q802022 · 24 Jun 2022 · Shift 2
    
    1. A.Ranitidine
    2. B.Seldane
    3. C.Cimetidine
    4. D.Codeine
    Show answer

    Answer: C