Polymers & Everyday Chemistry · JEE Main previous year questions

2021 8 questions

1. Q782021 · 1 Sept 2021 · Shift 2

   Monomer units of Dacron polymer are :

   1. A.ethylene glycol and phthalic acid
   2. B.ethylene glycol and terephthalic acid
   3. C.glycerol and terephthalic acid
   4. D.glycerol and phthalic acid
   Show answer

   Answer: B

2. Q792021 · 26 Aug 2021 · Shift 2
   
   1. A.Antacid
   2. B.Analgesic
   3. C.Tranquilizer
   4. D.Antibiotic
   Show answer

   Answer: C

3. Q762021 · 27 Jul 2021 · Shift 2
   
   1. A.Both statement I and statement II are false
   2. B.Statement I is incorrect but statement II is true
   3. C.Both statement I and statement II are true
   4. D.Statement I is correct but statement II is false
   Show answer

   Answer: B

4. Q792021 · 22 Jul 2021 · Shift 2

   Match List-I with List-II : $$\begin{array}{llll}& \text{List - I}& & \text{List - II}\\ \text{(a)}& \text{Chloroprene}& \text{(i)}& \mathrm{C}{\mathrm{H}}_2=\mathrm{C}(\mathrm{C}{\mathrm{H}}_3)-\mathrm{CH}=\mathrm{C}{\mathrm{H}}_2\\ \text{(b)}& \text{Neoprene}& \text{(ii)}& \mathrm{C}{\mathrm{H}}_2=\mathrm{C}(\mathrm{Cl})-\mathrm{CH}=\mathrm{C}{\mathrm{H}}_2\\ \text{(c)}& \text{Acrylonitrile}& \text{(iii)}& -{\left[\mathrm{C}{\mathrm{H}}_2-\mathrm{C}(\mathrm{Cl})=\mathrm{CH}-\mathrm{C}{\mathrm{H}}_2\right]}_{\mathrm{n}}-\\ \text{(d)}& \text{Isoprene}& \text{(iv)}& \mathrm{C}{\mathrm{H}}_2=\mathrm{CH}-\mathrm{CN}\end{array}$$ Choose the correct answer from the options given below :

   1. A.(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
   2. B.(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
   3. C.(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
   4. D.(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
   Show answer

   Answer: B

5. Q752021 · 18 Mar 2021 · Shift 1

   Match the list - I with list - II $$\begin{array}{llll}& \text{List - I}& & \text{List - II}\\ & \text{(Class of Drug)}& & \text{(Example)}\\ \text{(a)}& \text{Antacid}& \text{(i)}& \text{Novestrol}\\ \text{(b)}& \text{Artificial sweetener}& \text{(ii)}& \text{Cimetidine}\\ \text{(c)}& \text{Antifertility}& \text{(iii)}& \text{Valium}\\ \text{(d)}& \text{Tranquilizers}& \text{(iv)}& \text{Alitame}\end{array}$$

   1. A.(a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)
   2. B.(a) - (iv), (b) - (i), (c) - (ii), (d) - (iii)
   3. C.(a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)
   4. D.(a) - (ii), (b) - (iv), (c) - (iii), (d) - (i)
   Show answer

   Answer: A

6. Q742021 · 18 Mar 2021 · Shift 2

   Given below are two statements : Statement I : Non-biodegradable wastes are generated by the thermal power plants. Statement II : Bio-degradable detergents leads to eutrophication. In the light of the above statements, choose the most appropriate answer from the options given below :

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

   Answer: B

7. Q802021 · 18 Mar 2021 · Shift 2

   Match List - I with List - II : $$\begin{array}{llll}& \text{List - I}& & \text{List - II}\\ & \text{(Class of Chemicals)}& & \text{(Example)}\\ \text{(a)}& \text{Antifertility drug}& \text{(i)}& \text{Meprobamate}\\ \text{(b)}& \text{Antibiotic}& \text{(ii)}& \text{Alitame}\\ \text{(c)}& \text{Tranquilizer}& \text{(iii)}& \text{Norethindrone}\\ \text{(d)}& \text{Artificial Sweetener}& \text{(iv)}& \text{Salvarsan}\end{array}$$ Choose the most appropriate match :

   1. A.(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
   2. B.(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
   3. C.(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
   4. D.(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
   Show answer

   Answer: B

8. Q802021 · 26 Feb 2021 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
   Show answer

   Answer: A