Polymers & Everyday Chemistry · JEE Main previous year questions

A toxic compound \" A \" when reacted with $\text{NaCN}$ in aqueous acidic medium yields an edible cooking component and food preservative \" B \". \" B \" is converted to \" C \" by diborane and can be used as an additive to petrol to reduce emission. \"C\" upon reaction with oleum at $140^{\circ }\text{C}$ yields an inhalable anesthetic \" D \". Identify \" A \", \" B \", \" C \" & \" D \", respectively :

1. A.Methanol; acetic acid; ethanol; diethyl ether
2. B.Ethanol; acetonitrile; ethylamine; ethylene
3. C.Methanol; formaldehyde; methyl chloride; chloroform
4. D.Acetaldehyde; 2-hydroxypropanoic acid; propanoic acid; dipropyl ether

Drug $X$ becomes ineffective after $50\%$ decomposition. The original concentration of drug in a bottle was $16mg/mL$ which becomes $4mg/mL$ in 12 months. The expiry time of the drug in months is ____. Assume that the decomposition of the drug follows first order kinetics.

1. A.12
2. B.3
3. C.6
4. D.2

Match the following | Column A | Column B | | :--- | :--- | | (a) Nylon 6 | (I) Natural Rubber | | (b) Vulcanized Rubber | (II) Cross Linked | | (c) cis-1, 4-polyisoprene | (III) Caprolactam | | (d) Polychloroprene | (IV) Neoprene | Choose the correct answer from options given below:

1. A.$a\to \text{III},b\to \text{II},c\to \text{I},d\to \text{IV}$
2. B.$a\to \text{II},b\to \text{III},c\to \text{IV},d\to \text{I}$
3. C.$a\to \text{IV},b\to \text{III},c\to \text{I},d\to \text{II}$
4. D.$a\to \text{III},b\to \text{IV},c\to \text{I},d\to \text{II}$

Match List I with List II | LIST I (Examples) | | LIST II (Type) | | :--- | :--- | :--- | | A. 2-chloro-1,3-butadiene | I. | Biodegradable polymer | | B. Nylon 2-nylon 6 | II. | Synthetic Rubber | | C. Polyacrylonitrile | III. | Polyester | | D. Dacron | IV. | Addition Polymer | Choose the correct answer from the options given below:

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

The polymer X - consists of linear molecules and is closely packed. It is prepared in the presence of triethylaluminium and titanium tetrachloride under low pressure. The polymer X is-

1. A.High density polythene
2. B.Polytetrafluoroethane
3. C.Low density polythene
4. D.Polyacrylonitrile

Given below are two statements : Statement I : Ethene at $333$ to $343\text{ K}$ and $6\text{-}7\text{ atm}$ pressure in the presence of $\mathrm{AlE}{\mathrm{t}}_3$ and $\mathrm{TiC}{\mathrm{l}}_4$ undergoes addition polymerization to give LDP. Statement II : Caprolactam at $533\text{-}543\text{ K}$ in ${\mathrm{H}}_2\mathrm{O}$ through step growth polymerizes to give Nylon 6. 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.Statement I is true but Statement II is false
3. C.Statement I is false but Statement II is true
4. D.Both Statement I and Statement II are false

Match List I with List II $$\begin{array}{llll}& \text{List I Polymer}& & \text{List II Type/Class}\\ \text{(A)}& \text{Nylon-2-Nylon-6}& \text{(I)}& \text{Thermosetting polymer}\\ \text{(B)}& \text{Buna-N}& \text{(II)}& \text{Biodegradable polymer}\\ \text{(C)}& \text{Urea-formaldehyde resin}& \text{(III)}& \text{Synthetic rubber}\\ \text{(D)}& \text{Dacron}& \text{(IV)}& \text{Polyester}\end{array}$$ Choose the correct answer from the options given below:

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

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

The reaction used for preparation of soap from fat is :

1. A.an addition reaction
2. B.alkaline hydrolysis reaction
3. C.reduction reaction
4. D.an oxidation reaction

Match List I with List II: $$\begin{array}{llll}& \text{LIST I}& & \text{LIST II}\\ \text{A.}& \text{Saccharin}& \text{I.}& \text{High potency sweetener}\\ \text{B.}& \text{Aspartame}& \text{II.}& \text{First artificial sweetening agent}\\ \text{C.}& \text{Alitame}& \text{III.}& \text{Stable at cooking temperature}\\ \text{D.}& \text{Sucralose}& \text{IV.}& \text{Unstable at cooking temperature}\end{array}$$ Choose the correct answer from the options given below:

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

Polymer used in orlon is :

1. A.Polyethene
2. B.Polyacrylonitrile
3. C.Polycarbonate
4. D.Polyamide

Given below are two statements: Statement I: Morphine is a narcotic analgesic. It helps in relieving pain without producing sleep. Statement II: Morphine and its derivatives are obtained from opium poppy. 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.Statement I is true but Statement II is false
3. C.Both Statement I and Statement II are false
4. D.Statement I is false but Statement II is true

Match List I with List II | List I | List II | | :--- | :--- | | A. Tranquilizers | I. Anti blood clotting | | B. Aspirin | II. Salvarsan | | C. Antibiotic | III. antidepressant drugs | | D. Antiseptic | IV. soframicine | Choose the correct answer from the options given below:

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

Which of the following artificial sweeteners has the highest sweetness value in comparison to cane sugar ?

1. A.Alitame
2. B.Sucralose
3. C.Saccharin
4. D.Aspartame

Amongst the following compounds, which one is an antacid?

1. A.Ranitidine
2. B.Brompheniramine
3. C.Terfenadine
4. D.Meprobamate

Match List I with List II. $$\begin{array}{llll}& \text{List I Antimicrobials}& & \text{List II Names}\\ \text{(A)}& \text{Narrow Spectrum Antibiotic}& \text{(I)}& \text{Furacin}\\ \text{(B)}& \text{Antiseptic}& \text{(II)}& \text{Sulphur dioxide}\\ \text{(C)}& \text{Disinfectants}& \text{(III)}& \text{Penicillin G}\\ \text{(D)}& \text{Broad spectrum antibiotic}& \text{(IV)}& \text{Chloramphenicol}\end{array}$$ Choose the correct answer from the options given below :

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

A doctor prescribed the drug Equanil to a patient. The patient was likely to have symptoms of which disease?

1. A.Stomach ulcers
2. B.Depression and hypertension
3. C.Anxiety and stress
4. D.Hyperacidity

Match List I with List II $$\begin{array}{llll}& \text{List I}& & \text{List II}\\ \text{A.}& \text{Elastomeric polymer}& \text{I.}& \text{Urea formaldehyde resin}\\ \text{B.}& \text{Fibre Polymer}& \text{II.}& \text{Polystyrene}\\ \text{C.}& \text{Thermosetting Polymer}& \text{III.}& \text{Polyester}\\ \text{D.}& \text{Thermoplastic Polymer}& \text{IV.}& \text{Neoprene}\end{array}$$ Choose the correct answer from the options given below :

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

Which of the following statements is incorrect for antibiotics?

1. A.An antibiotic should promote the growth or survival of microorganisms.
2. B.An antibiotic must be a product of metabolism.
3. C.An antibiotic should be effective in low concentrations.
4. D.An antibiotic is a synthetic substance produced as a structural analogue of naturally occurring antibiotic.

Match List I with List II $$\begin{array}{llll}& \text{List I (Name of polymer)}& & \text{List II (Uses)}\\ \text{A.}& \text{Glyptal}& \text{I.}& \text{Flexible pipes}\\ \text{B.}& \text{Neoprene}& \text{II.}& \text{Synthetic wool}\\ \text{C.}& \text{Acrilan}& \text{III.}& \text{Paints and Lacquers}\\ \text{D.}& \text{LDP}& \text{IV.}& \text{Gaskets}\end{array}$$ 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-III, B-II, C-IV, D-I
4. D.A-III, B-IV, C-II, D-I

Match List I with List II $$\begin{array}{llll}& \text{List-I}& & \text{List-II}\\ & \text{Type}& & \text{Name}\\ \text{A.}& \text{Antifertility drug}& \text{i)}& \text{Norethindrone}\\ \text{B.}& \text{Tranquilizer}& \text{ii)}& \text{Meprobamate}\\ \text{C.}& \text{Antihistamine}& \text{iii)}& \text{Seldane}\\ \text{D.}& \text{Antibiotic}& \text{iv)}& \text{Ampicillin}\end{array}$$ Choose the correct answer from the options given below :

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

Which of the following compounds is an example of hypnotic drug?

1. A.Seldane
2. B.Amytal
3. C.Aspartame
4. D.Prontosil

Which of the following is NOT a natural polymer?

1. A.Protein
2. B.Starch
3. C.Rubber
4. D.Rayon

Terylene polymer is obtained by condensation of :

1. A.Ethane-1,2-diol and Benzene-1,3 dicarboxylic acid
2. B.Propane-1, 2-diol and Benzene-1, 4 dicarboxylic acid
3. C.Ethane-1,2-diol and Benzene-1, 4 dicarboxylic acid
4. D.Ethane-1,2-diol and Benzene-1, 2 dicarboxylic acid

Statements about Enzyme Inhibitor Drugs are given below : (A) There are Competitive and Non-competitive inhibitor drugs. (B) These can bind at the active sites and allosteric sites. (C) Competitive Drugs are allosteric site blocking drugs. (D) Non-competitive Drugs are active site blocking drugs. Choose the correct answer from the options given below:

1. A.(A), (D) only
2. B.(A), (C) only
3. C.(A), (B) only
4. D.(A), (B), (C) only