JEE Chemistry Chemistry In Everyday Life MCQs Set 19

Chemistry Objective Questions and Answers: Chemistry In Everyday Life

Access targeted multiple-choice questions for Chemistry In Everyday Life designed to align with the latest JEE academic syllabus for JEE Chemistry. These objective practice sets help students evaluate their conceptual understanding and improve exam readiness.

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Access the complete set of multiple-choice questions for Chemistry In Everyday Life below. This focused format allows students to isolate specific topics for thorough review and uninterrupted practice alongside official JEE textbooks.

Multiple Choice Questions

Question 1: Terfenadine is commonly used as a/an:
(a) tranquilliser
(b) antihistamine
(c) antimicrobial
(d) antibiotic
Show Answer & Explanation

Answer: (b) antihistamine

Explanation:
1. Terfenadine blocks the H₁ histamine receptors.
2. It is used as an antihistamine (anti-allergy) drug.

Teacher's Note:
1. Terfenadine, brompheniramine and diphenhydramine are antihistamines.

Question 2: Which of the following is a bactericidal antibiotic?
(a) Ofloxacin
(b) Tetracycline
(c) Chloramphenicol
(d) Erythromycin
Show Answer & Explanation

Answer: (a) Ofloxacin

Explanation:
1. Bactericidal antibiotics kill bacteria; bacteriostatic ones only stop their growth.
2. Ofloxacin, penicillin and aminoglycosides are bactericidal, while tetracycline, chloramphenicol and erythromycin are bacteriostatic.

Teacher's Note:
1. Bactericidal drugs kill the bacteria.

Question 3: Which of the following statements about aspirin is not true?
(a) It is effective in relieving pain
(b) It is a neurologically active drug
(c) It has anti-blood clotting action
(d) It belongs to narcotic analgesics
Show Answer & Explanation

Answer: (d) It belongs to narcotic analgesics

Explanation:
1. Aspirin relieves pain and fever and reduces blood clotting.
2. It is a non-narcotic analgesic, so the statement that it is a narcotic is not true.

Teacher's Note:
1. Narcotics are morphine-like drugs; aspirin is a non-narcotic analgesic.

Question 4: Various phenol derivatives, tincture of iodine (2-3%) in water/alcohol, and some dyes like methylene blue are:
(a) antiseptics
(b) disinfectants
(c) analgesics
(d) antipyretics
Show Answer & Explanation

Answer: (a) antiseptics

Explanation:
1. Antiseptics kill or prevent the growth of microorganisms and can be applied to living tissue.
2. Dettol, boric acid, iodoform and methylene blue are common examples.

Teacher's Note:
1. Antiseptics are applied to living tissue; disinfectants to inanimate objects.

Question 5: Which of the following is a hypnotic drug?
(a) Luminal
(b) Salol
(c) Catechol
(d) Chemisol
Show Answer & Explanation

Answer: (a) Luminal

Explanation:
1. Hypnotic (sleep inducing) drugs are barbiturates.
2. Luminal (phenobarbital) is a typical example.

Teacher's Note:
1. Luminal and seconal are barbiturates.

Question 6: An ester used as medicine is:
(a) ethyl acetate
(b) methyl acetate
(c) methyl salicylate
(d) ethyl benzoate
Show Answer & Explanation

Answer: (c) methyl salicylate

Explanation:
1. Methyl salicylate (oil of wintergreen) is used as a liniment for pain.
2. The other esters are solvents or flavouring agents.

Teacher's Note:
1. Oil of wintergreen is methyl salicylate.

Question 7: Which of the following acts as an antioxidant in edible oils?
(a) Vitamin B
(b) Vitamin C
(c) Vitamin D
(d) Vitamin E
Show Answer & Explanation

Answer: (d) Vitamin E

Explanation:
1. Vitamin E is a fat soluble antioxidant.
2. It prevents the oxidation (rancidity) of edible oils.

Teacher's Note:
1. Fat soluble antioxidants include vitamin E and BHA.

Question 8: The correct structure of the drug paracetamol is:
(a) 4-methoxybenzamide
(b) N-(4-hydroxyphenyl)ethanamide (4-hydroxyacetanilide)
(c) 4-methoxy-2-hydroxybenzamide
(d) 4-hydroxyacetophenone
Show Answer & Explanation

Answer: (b) N-(4-hydroxyphenyl)ethanamide (4-hydroxyacetanilide)

Explanation:
1. Paracetamol is p-acetamidophenol: a benzene ring carrying OH and NHCOCH₃ groups para to each other.
2. That is N-(4-hydroxyphenyl)ethanamide.

Teacher's Note:
1. Paracetamol = p-hydroxy acetanilide.

Question 9: Which one of the following can possibly be used as an analgesic without causing addiction and mood modification?
(a) Diazepam
(b) Morphine
(c) N-acetyl-para-aminophenol
(d) Tetrahydrocannabinol
Show Answer & Explanation

Answer: (c) N-acetyl-para-aminophenol

Explanation:
1. N-acetyl-p-aminophenol is paracetamol, a non-narcotic analgesic and antipyretic.
2. Morphine is a narcotic, and diazepam and tetrahydrocannabinol alter mood.

Teacher's Note:
1. Non-narcotic analgesics do not cause addiction.

Question 10: Match the chemicals in Column I with their uses in Column II: (A) Sodium perborate, (B) Chlorine, (C) Bithional, (D) Potassium stearate; (I) Disinfectant, (II) Antiseptic, (III) Milk bleaching agent, (IV) Soap.
(a) A-I, B-II, C-III, D-IV
(b) A-II, B-III, C-IV, D-I
(c) A-III, B-I, C-II, D-IV
(d) A-IV, B-I, C-II, D-III
Show Answer & Explanation

Answer: (c) A-III, B-I, C-II, D-IV

Explanation:
1. Sodium perborate is a bleaching agent, chlorine is a disinfectant, bithional is an antiseptic, and potassium stearate is a soap.
2. So A-III, B-I, C-II, D-IV.

Teacher's Note:
1. Learn each chemical with its everyday use.

Question 11: Salol can be used as:
(a) antiseptic
(b) antipyretic
(c) analgesic
(d) none of these
Show Answer & Explanation

Answer: (a) antiseptic

Explanation:
1. Salol is phenyl salicylate.
2. It is used as an antiseptic.

Teacher's Note:
1. Salol is phenyl salicylate.

Question 12: The insecticide containing 99% γ-isomer of benzene hexachloride is known as:
(a) lindane
(b) TNT
(c) malathion
(d) methoxychlor
Show Answer & Explanation

Answer: (a) lindane

Explanation:
1. Benzene hexachloride (BHC) exists in several isomers.
2. The γ-isomer, over 99% pure, is called lindane (gammexane).

Teacher's Note:
1. Lindane is γ-BHC.

Question 13: Aspirin (o-acetoxybenzoic acid) is used as:
(a) an anti-inflammatory compound
(b) an analgesic
(c) a hypnotic
(d) an antiseptic
Show Answer & Explanation

Answer: (b) an analgesic

Explanation:
1. Aspirin relieves pain and reduces fever.
2. It is used as an analgesic and antipyretic.

Teacher's Note:
1. Aspirin is a non-narcotic analgesic.

Question 14: Which of these is a hypnotic?
(a) metaldehyde
(b) acetaldehyde
(c) paraldehyde
(d) none of these
Show Answer & Explanation

Answer: (c) paraldehyde

Explanation:
1. Paraldehyde, a trimer of acetaldehyde, is a sedative-hypnotic.
2. Metaldehyde is used as a slug killer.

Teacher's Note:
1. Paraldehyde induces sleep.

Question 15: The drug used for prevention of heart attacks is:
(a) aspirin
(b) valium
(c) chloramphenicol
(d) cephalosporin
Show Answer & Explanation

Answer: (a) aspirin

Explanation:
1. Aspirin has an anti-blood clotting action.
2. Low doses are therefore used to prevent heart attacks.

Teacher's Note:
1. Aspirin reduces clot formation.

Question 16: Omeprazole and lansoprazole are used as:
(a) antifertility
(b) antiallergic
(c) antibiotic
(d) antacid
Show Answer & Explanation

Answer: (d) antacid

Explanation:
1. These drugs inhibit the proton pump of stomach cells.
2. They reduce acid secretion and are used as antacids.

Teacher's Note:
1. Omeprazole reduces stomach acid.

Question 17: The drug which is effective in curing malaria is:
(a) quinine
(b) aspirin
(c) analgin
(d) equanil
Show Answer & Explanation

Answer: (a) quinine

Explanation:
1. Quinine and chloroquine are antimalarial drugs.
2. The others are analgesics or tranquillisers.

Teacher's Note:
1. Quinine is the classic antimalarial.

Question 18: The formulation of Dettol contains:
(a) chloroxylenol
(b) terpineol
(c) alcohol
(d) all of these
Show Answer & Explanation

Answer: (d) all of these

Explanation:
1. Dettol contains about 4.8% chloroxylenol, 9.9% terpineol and absolute alcohol.
2. So it contains all three.

Teacher's Note:
1. Dettol is chloroxylenol with terpineol.

Question 19: When salicylic acid is treated with acetic anhydride, we get:
(a) aspirin
(b) paracetamol
(c) salol
(d) none of these
Show Answer & Explanation

Answer: (a) aspirin

Explanation:
1. Acetylation of the phenolic OH of salicylic acid by acetic anhydride gives acetylsalicylic acid.
2. This is aspirin.

Teacher's Note:
1. Aspirin is acetylsalicylic acid.

Question 20: Which artificial sweetener contains chlorine?
(a) Sucralose
(b) Alitame
(c) Aspartame
(d) Saccharin
Show Answer & Explanation

Answer: (a) Sucralose

Explanation:
1. Sucralose is a trichloro derivative of sucrose.
2. Aspartame, alitame and saccharin contain no chlorine.

Teacher's Note:
1. Sucralose is chlorinated sucrose.

Question 21: Which group is present at the polar end of an anionic synthetic detergent?
(a) ester group
(b) sulphonate or sulphate group (–SO₃⁻Na⁺ or –OSO₃⁻Na⁺)
(c) aldehyde group
(d) amine group
Show Answer & Explanation

Answer: (b) sulphonate or sulphate group (–SO₃⁻Na⁺ or –OSO₃⁻Na⁺)

Explanation:
1. Detergents have a long non-polar hydrocarbon chain and an ionic head.
2. In anionic detergents the head is a sulphonate or sulphate group, as in sodium dodecylbenzenesulphonate.

Teacher's Note:
1. Anionic detergents are sodium alkyl sulphates or sulphonates.

Question 22: An antibiotic which contains a nitro group attached to an aromatic nucleus is:
(a) penicillin
(b) streptomycin
(c) tetracycline
(d) chloramphenicol
Show Answer & Explanation

Answer: (d) chloramphenicol

Explanation:
1. Chloramphenicol has a p-nitrophenyl group and a dichloroacetamide side chain.
2. It is the broad spectrum antibiotic containing a nitro group.

Teacher's Note:
1. Chloramphenicol contains the NO₂ group.

Question 23: Which is correct about vanillin?
(a) A flavouring agent having vanilla flavour
(b) p-hydroxy-m-methoxybenzaldehyde
(c) A food additive
(d) All of these
Show Answer & Explanation

Answer: (d) All of these

Explanation:
1. Vanillin is 4-hydroxy-3-methoxybenzaldehyde.
2. It is a vanilla flavouring agent and a food additive, so all the statements are correct.

Teacher's Note:
1. Vanillin is a flavouring aldehyde.

Question 24: Which is correct about saccharin?
(a) It is an ortho-sulphobenzimide
(b) It is 600 times sweeter than sugar
(c) It is used as a sweetening agent
(d) All of these
Show Answer & Explanation

Answer: (d) All of these

Explanation:
1. Saccharin is o-sulphobenzimide, about 550-600 times as sweet as sugar.
2. It is used as an artificial sweetener, so all statements are correct.

Teacher's Note:
1. Saccharin is the first popular artificial sweetener.

Question 25: Which one of the following is employed as an antihistamine?
(a) Chloramphenicol
(b) Diphenylhydramine
(c) Norethindrone
(d) Omeprazole
Show Answer & Explanation

Answer: (b) Diphenylhydramine

Explanation:
1. Diphenhydramine (Benadryl) is an H₁ antihistamine.
2. Chloramphenicol is an antibiotic, norethindrone is antifertility and omeprazole is an antacid.

Teacher's Note:
1. Benadryl is diphenhydramine.

Question 26: The artificial sweetener which is stable under cold conditions only is:
(a) Saccharine
(b) Sucralose
(c) Aspartame
(d) Alitame
Show Answer & Explanation

Answer: (c) Aspartame

Explanation:
1. Aspartame is unstable at cooking temperature.
2. It is used only in cold foods and soft drinks.

Teacher's Note:
1. Aspartame decomposes on heating.

Question 27: Chemically, heroin is:
(a) morphine monoacetate
(b) morphine dibenzoate
(c) morphine diacetate
(d) morphine monobenzoate
Show Answer & Explanation

Answer: (c) morphine diacetate

Explanation:
1. Acetylation of both hydroxyl groups of morphine with acetic anhydride gives heroin.
2. So heroin is morphine diacetate.

Teacher's Note:
1. Heroin = diacetylmorphine.

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