JEE Main Previous year questions (2021-23): Chemistry in Everyday Life | 35 Years Chapter wise Previous Year Solved Papers for JEE PDF Download

Q.1. Match List I with List II         (JEE Main 2023)
Choose the correct answer from the options given below:
(a) A-I, B-III, C-II, D-IV
(b) A-IV, B-III, C-II, D-I
(c) A-I, B-II, C-III, D-IV
(d)A-II, B-I, C-III, D-IV

Ans. c

Q.2. Which of the following compounds is an example of hypnotic drug?    (JEE Main 2022)
(a) Seldane
(b) Amytal
(c) Aspartame
(d) Prontosil

Ans. b
Amytal is hypnotic drug used to treat sleeping disorder.

Q.3.  Which among the following pairs has only herbicides?    (JEE Main 2022)
(a) Aldrin and Dieldrin
(b) Sodium chlorate and Aldrin
(c) Sodium arsinate and Dieldrin
(d) Sodium chlorate and sodium arsinite

Ans. d
Both sodium chlorate and sodium arsenate behave as herbicide.

Q.4. 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:    (JEE Main 2022)
(a) (A), (D) only
(b) (A), (C) only
(c) (A), (B) only
(d) (A), (B), (C) only

Ans. c
Drugs can inhibit the attachment of substrate on active site of Enzyme in two ways.
(1) Competitive, (2) Non-competitive
Competitive inhibitors bind on the active site of Enzymes. Non-Competitive inhibitors bind on allosteric site.

Q.5. Match List I with List II.
Choose the correct answer from the options given below:    (JEE Main 2022)
(a) A-IV, B-III, C-II, D-I
(b) A-III, B-I, C-II, D-IV
(c) A-III, B-IV, C-I, D-II
(d) A-III, B-I, C-IV, D-II

Ans. c
A is morphine which is a narcotic analgesic.
B is chloroxylenol, an antiseptic.
C is Nardil, an antidepressant.
D is saccharin, which is around 550 times sweeter than cane sugar.

Q.6. Match List I with List II.

Choose the correct answer from the options given below :    (JEE Main 2022)
(a) A-II, B-III, C-IV, D-I
(b) A-II, B-I, C-IV D-III
(c) A-I, B-IV, C-II, D-III
(d) A-I, B-IV, C-III, D-II

Ans. a

Q.7. Stearic acid and polyethylene glycol react to form which one of the following soap/s detergents ?    (JEE Main 2022)
(a) Cationic detergent
(b) Soap
(c) Anionic detergent
(d) Non-ionic detergent

Ans. d

Q.8. Some drugs bind to a site other than the active site of an enzyme. This site is known as    (JEE Main 2022)
(a) non-active site
(b) allosteric site
(c) competitive site
(d) therapeutic site

Ans. b
Some drugs do not bind to the enzyme’s active site. These bind to a different site of enzyme which is called allosteric site.

Q.9. Drugs used to bind to receptors, inhibiting is natural function and blocking a message are called:    (JEE Main 2022)
(a) Agonists
(b) Antagonists
(c) Allosterists
(d) Anti histaminists

Ans. b
Drugs that bind to the receptor site and inhibit its natural function are called Antagonists.

Q.10. Which one of the following chemicals has not been used for the dry cleaning of clothes?    (JEE Main 2022)
(a) Tetrachloroethene
(b) Liquid CO₂
(c) Ethanol
(d) H₂O₂

Ans. c
Dry-cleaning means the cleaning of clothes without using water. The solvent should be such that it evaporates easily. Ethanol is not used for dry cleaning of clothes.

Q.11. Which of the following is not a broad spectrum antibiotic?
(a) Vancomycin
(b) Ampicillin
(c) Ofloxacin
(d) Penicillin G

Ans. d
Penicillin G following is a narrow spectrum antibiotic

Q.12. The structure shown below is of which well-known drug molecule?    (JEE Main 2022)
(a) Ranitidine
(b) Seldane
(c) Cimetidine
(d) Codeine

Ans. c
The given structure is that of cimetidine which is well known antacid.

Q.13. Which one of the following is an example of artificial sweetner?    (JEE Main 2022)
(a) Bithional
(b) Alitame
(c) Salvarsan
(d) Lactose

Ans. b
Alitame is a second generation dipeptide sweetner that is 200 times sweeter than sucrose.

Q.14. An antiseptic dettol is a mixture of two compounds 'A' and 'B' where A has 6π electrons and B has 2π electrons. What is 'B'?    (JEE Main 2022)
(a) Bithionol
(b) Terpineol
(c) Chloroxylenol
(d) Chloramphenicol

Ans. b

Q.15. Match List I with List II
Choose the correct answer from the options given below :    (JEE Main 2022)
(a) A-II, B-III, C-I, D-IV
(b) A-II, B-III, C-IV, D-I
(c) A-III, B-II, C-IV, D-I
(d) A-III, B-II, C-I, D-IV

Ans. b

Zymase naturally occurs in yeast.
Diastase is found in malt.
Urease is found in soyabean
Pepsin is found in stomach

Q.16.  Which one of the following is a water soluble vitamin, that is not excreted easily?    (JEE Main 2022)
(a) Vitamin B₂
(b) Vitamin B₁
(c) Vitamin B₆
(d) Vitamin B₁₂

Ans. d

Q.17. Which of the following is NOT an example of synthetic detergent?    (JEE Main 2022)
(a)
(b) CH₃−(CH₂)16−COO⁻Na⁺
(c)
(d) CH₃(CH₂)₁₆COO(CH₂CH₂O)_nCH₂CH₂OH

Ans. b

Q.18. Match List - I with List - II.    (JEE Main 2022)
(a) (A) - (III), (B) - (II), (C) - (IV), (D) - (I)
(b) (A) - (IV), (B) - (II), (C) - (III), (D) - (I)
(c) (A) - (IV), (B) - (III), (C) - (II), (D) - (I)
(d) (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Ans. b

Q.19. Match List - I with List - II
Choose the correct answer from the options given below :    (JEE Main 2022)
(a) (A) - (II), (B) - (III), (C) - (IV), (D) - (I)
(b) (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
(c) (A) - (IV), (B) - (III), (C) - (II), (D) - (I)
(d) (A) - (II), (B) - (III), (C) - (I), (D) - (IV)

Ans. a

Q.20. Match List-I with List-II
Choose the correct answer from the options given below :    (JEE Main 2022)
(a) A-III, B-I, C-II, D-IV
(b) A-III, B-I, C-IV, D-II
(c) A-I, B-IV, C-II, D-III
(d) A-I, B-III, C-II, D-IV

Ans. a

Q.21. Stability of α-Helix structure of proteins depends upon    (JEE Main 2022)
(a) dipolar interaction
(b) H-bonding interaction
(c) van der Waals forces
(d) π-stacking interaction

Ans. b

Q.22. Which amongst the following is not a pesticide?    (JEE Main 2022)
(a) DDT
(b) Organophosphates
(c) Dieldrin
(d) Sodium arsenite

Ans. d
NaAsO₂ (Sodium arsenite) is an insecticide, antibacterial agent herbicide.

Q.23. The drug tegamet is:    (JEE Main 2022)
(a)
(b)
(c)
(d)

Ans. c

Q.24. The mixture of chloroxylenol and terpineol is an example of    (JEE Main 2022)
(a) antiseptic
(b) pesticide
(c) disinfectant
(d) narcotic analgesic

Ans. a
The mixture of chloroxylenol and terpineol is known as Dettol. It acts as an Antiseptic.

Q.25. Which of the following compound does not contain sulphur atom?    (JEE Main 2022)
(a) Cimetidine
(b) Ranitidine
(c) Histamine
(d) Saccharin

Ans. c

Q.26. How many of the following drugs is/are example(s) of broad spectrum antibiotics?
Ofloxacin, Penicillin G, Terpineol, Salvarsan.    (JEE Main 2022)

Ans. 1
Ofloxacin is the only broad-spectrum antibiotic given in the question
Penicillin - G is a narrow-spectrum antibiotic.
Salvarsan is mainly active against spirochete, a bacteria that causes syphilis
Terpineol is an antiseptic.

Q.27. How many of the following drugs belong to the tranquilizer class _____________ ?
Veronal, Luminal, Propanal, Seconal    (JEE Main 2022)

Ans. 3
Tranquilizers are chèmical compounds used to treat stress and mild or severe mental diseases.
Veronal, Luminal, and Seconal belong to the tranquilizers class.

Q.28. The number of compound/s given below which contain/s -COOH group is __________. (Integer answer)    (JEE Main 2021)
(a) Sulphanilic acid
(b) Picric acid
(c) Aspirin
(d) Ascorbic acid

Ans. 1
The structures of the given compounds are
(a) Sulphanilic acid

(b) Picric acid

(c) Aspirin

(d) Ascorbic Acid

∴ Only 1 compound has –COOH group

Q.29.  Which one of the following chemicals is responsible for the production of HCl in the stomach leading to irritation and pain?    (JEE Main 2021)
(a)
(b)
(c)
(d)

Ans. b
Histamine stimulate the secretion of HCl

Q.30.
The correct statement about (A), (B), (C) and (D) is :    (JEE Main 2021)
(a) (A), (B) and (C) are narcotic analgesics
(b) (B), (C) and (D) are tranquillizers
(c) (A) and (D) are tranquillizers
(d) (B) and (C) are tranquillizers

Ans. d

Q.31. The class of drug to which chlordiazepoxide with above structure belongs is :    (JEE Main 2021)
(a) Antacid
(b) Analgesic
(c) Tranquilizer
(d) Antibiotic

Ans. c
The drug named chlordiate poxide is example of tranquilizer.

Q.32. Given below are two statements :
Statement I : Penicillin is a bacteriostatic type antibiotic.
Statement II : The general structure of Penicillin is :    (JEE Main 2021)
Choose the correct option :
(a) Both statement I and statement II are false
(b) Statement I is incorrect but statement II is true
(c) Both statement I and statement II are true
(d) Statement I is correct but statement II is false

Ans. b
Statement I : Penicillin is bactericidal not bacteriostatic hence given statement is false.
Statement II : Structure of penicillin given is correct.

Q.33. The compound 'A' is a complementary base of _______________ in DNA stands.    (JEE Main 2021)

(a) Uracil
(b) Guanine
(c) Adenine
(d) Cytosine

Ans. c
Given structure is Thymine and Thymine being paired with adenine.

Q.34. Match List - I with List - II :
Choose the most appropriate match :    (JEE Main 2021)
(a) (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
(b) (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
(c) (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
(d) (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

Ans. d

• furacine acts as Antiseptic
• Arsphenamine also known as salvarsan acts as antibiotic
• Dimetone is synthetic histamine
• valium is a Tranquilizer

Q.35. Which one of the following chemical agent is not being used for dry-cleaning of clothes?    (JEE Main 2021)
(a) H₂O₂
(b) CCl₄
(c) Liquid CO₂
(d) Cl₂C = CCl₂

Ans. a
CO₂, CCl₄ and Cl₂C = CCl₂ are used as dry cleaning agents for clothes.
H₂O₂ is used as bleaching agent in laundry.

Q.36. Thiamine and pyridoxine are also known respectively as :    (JEE Main 2021)
(a) Vitamin B₂ and Vitamin E
(b) Vitamin E and Vitamin B₂
(c) Vitamin B₆ and Vitamin B₂
(d) Vitamin B₁ and Vitamin B₆

Ans. d
Vitamine-B₁ is also known as Thiamine while Vitamin B-6 is known as Pyridoxine.

Q.37. Green chemistry in day-to-day life is in the use of :    (JEE Main 2021)
(a) Chlorine for bleaching of paper
(b) Large amount of water alone for washing clothes
(c) Tetrachloroethene for laundry
(d) Liquified CO2 for dry cleaning of clothes

Ans. d
Liquified CO₂ for dry cleaning of clothes is in the use of green chemistry in day-to-day life.
Chlorine gas was used earlier for bleaching paper. Now a days, hydrogen peroxide (H₂O₂) with suitable catalyst are used. Earlier solvents like tetrachloroethylene were used in dry cleaning of clothes but they pollute the ground water and are carcinogenic.

Q.38. Match List - I with List - II :
Choose the most appropriate match :    (JEE Main 2021)
(a) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
(b) (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
(c) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
(d) (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)

Ans. b
(a) Antifertility drug → Norethindrone
(b) Antibiotic → Salvarsan
(c) Tranquilizer → Meprobamate
(d) Artificial sweetener → Alitame

Q.39. Match the list - I with list - II    (JEE Main 2021)
(a) (a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)
(b) (a) - (iv), (b) - (i), (c) - (ii), (d) - (iii)
(c) (a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)
(d) (a) - (ii), (b) - (iv), (c) - (iii), (d) - (i)

Ans. a
Antacid - Cimetidine
Artificial Sweetener - Alitame
Antifertility - Novestrol
Tranquilizers - Valium

Q.40. Match List - I with List - II.
Choose the correct match :    (JEE Main 2021)
(a) (a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
(b) (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
(c) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
(d) (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

Ans. d
(a) Sucralose → Artificial sweetener
(b) Glyceryl ester of stearic acid → Synthetic detergent
(c) Sodium benzoate → Food preservative
(d) Bithionol → Antiseptic

Q.41. With respect to drug-enzyme interaction, identify the wrong statement.    (JEE Main 2021)
(a) Allosteric inhibitor changes the enzyme's active site
(b) Allosteric inhibitor competes with the enzyme's active site
(c) Competitive inhibitor binds to the enzyme's active site
(d) Non-Competitive inhibitor binds to the allosteric site

Ans. b
Drugs complete with the natural substrate for their attachment to the active sites of enzymes. Such drugs are called competitive inhibitors.

Q.42. Which among the following pairs of Vitamins is stored in our body relatively for longer duration?    (JEE Main 2021)
(a) Thiamine and Vitamin A
(b) Ascorbic acid and Vitamin D
(c) Thiamine and Ascorbic acid
(d) Vitamin A and Vitamin D

Ans. d
Vitamins which are soluble in fat and oils but insoluble in water are fat-soluble vitamins, which are stored in our body relatively for a longer time.
e.g. Vitamin A and Vitamin D
Thiamine (Vit B₁) and Ascorbic acid (Vit C) are water-soluble.

Q.43. The functions of antihistamine are :    (JEE Main 2021)
(a) Antiallergic and Analgesic
(b) Antacid and antialergic
(c) Analgesic and antacid
(d) Antiallergic and antidepressant

Ans. b
The functions of antihistamine are antacid and antiallergic.

Q.44. Which of the following vitamin is helpful in delaying the blood clotting?    (JEE Main 2021)
(a) Vitamin K
(b) Vitamin C
(c) Vitamin E
(d) Vitamin B

Ans. a
Vitamin K is helpful in delaying the blood clotting.

Q.45. Given below are two statements :
Statement I : The identification of Ni²⁺ is carried out by dimethyl glyoxime in the presence of NH₄OH.
Statement II : The dimethyl glyoxime is a bidentate neutral ligand.
In the light of the above statements, choose the correct answer from the options given below:    (JEE Main 2021)
(a) Statement I is false but Statement II is true.
(b) Statement I is true but Statement II is false.
(c) Both Statement I and Statement II are false.
(d) Both Statement I and Statement II are true.

Ans. b
Both statements are true. Dimethyl glyoxime (DMG) is a neutral bidentate ligand (DMG^- ).
Ni²⁺ ion is identified with DMG in presence of NH₄OH to give a red ppt. Its reaction is as follows.

Q.46. Match List - I and List - II.    (JEE Main 2021)
(a) (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
(b) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
(c) (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
(d) (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)

Ans. d
(A) Valium – (4) Tranquilizer
A tranquilizer drug became a standard drug for the treatment of anxiety and one of most commonly prescribed drugs of all time.
(B) Morphine – (3) Analgesic
Morphine is effective for both acute and chronic pain and often used before and after surgery.
(C) Norethindrone – (1) Antifertility drug
It is a form of progesterone, a female hormone important for regulating ovulation and menstruation.
(D) Vitamin B₁₂ – (2) Pernicious anaemia
It is a nutrient that helps to keep our body blood cells and nerve cells healthy and help in making DNA.

Q.47. Most suitable salt which can be used for efficient clotting of blood will be :    (JEE Main 2021)
(a) Mg(HCO₃)₂
(b) NaHCO₃
(c) FeCl₃
(d) FeSO₄

Ans. c
According to Hardy-Schulze rule, for negatively charged sol, most (+ve) charged ion is needed for efficient coagulation.
Blood is a negatively charged sol. Hence FeCl₃ can be used for blood clotting and it from Fe³⁺ ion.