JEE Chemistry Chemistry In Everyday Life MCQs Set 18

Practice MCQs for JEE Chemistry 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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Multiple Choice Questions

Question 1: Noradrenaline is a/an:
(a) antidepressant
(b) antihistamine
(c) neurotransmitter
(d) antacid
Show Answer & Explanation

Answer: (c) neurotransmitter

Explanation:
1. Noradrenaline is a chemical messenger that carries signals between nerve cells.
2. Low levels of it lead to low signalling activity and depression, but it is itself a neurotransmitter.

Teacher's Note:
1. Neurotransmitters carry messages across synapses.

Question 2: The correct match between the drugs in Item I and the tests/uses in Item II is: A. Chloroxylenol, B. Norethindrone, C. Sulphapyridine, D. Penicillin; P. Carbylamine test, Q. Sodium hydrogen carbonate test, R. Ferric chloride test, S. Bayer's test.
(a) A-R, B-P, C-S, D-Q
(b) A-R, B-S, C-P, D-Q
(c) A-Q, B-S, C-P, D-R
(d) A-R, B-S, C-Q, D-P
Show Answer & Explanation

Answer: (b) A-R, B-S, C-P, D-Q

Explanation:
1. Chloroxylenol has a phenolic OH group and gives a violet colour with FeCl₃.
2. Norethindrone has a C≡C bond and decolourises KMnO₄ (Bayer's test); sulphapyridine has a primary NH₂ group (carbylamine test); penicillin has a COOH group and dissolves in NaHCO₃ with effervescence.

Teacher's Note:
1. Link each drug with the functional group that gives its test.

Question 3: The correct match between the drugs in Item I and the uses in Item II is: A. Norethindrone, B. Ofloxacin, C. Equanil; P. Antibiotic, Q. Antifertility, R. Hypertension, S. Analgesics.
(a) A-Q, B-R, C-S
(b) A-Q, B-P, C-R
(c) A-R, B-P, C-S
(d) A-R, B-S, C-P
Show Answer & Explanation

Answer: (b) A-Q, B-P, C-R

Explanation:
1. Norethindrone is a synthetic progesterone derivative used as an antifertility drug.
2. Ofloxacin is an antibiotic and Equanil (meprobamate) is a tranquilliser used in hypertension and stress.

Teacher's Note:
1. Learn each drug with its class.

Question 4: Taj Mahal is being slowly disfigured and discoloured. This is primarily due to:
(a) water pollution
(b) soil pollution
(c) global warming
(d) acid rain
Show Answer & Explanation

Answer: (d) acid rain

Explanation:
1. Acid rain contains HNO₃, H₂SO₄ and H₂SO₃ formed from oxides of nitrogen and sulphur.
2. They react with the marble (CaCO₃): CaCO₃ + 2H⁺ → Ca²⁺ + H₂O + CO₂.

Teacher's Note:
1. Acid rain attacks marble.

Question 5: Which of the following is an anionic detergent?
(a) Sodium lauryl sulphate
(b) Cetyltrimethylammonium bromide
(c) Glyceryl oleate
(d) Sodium stearate
Show Answer & Explanation

Answer: (a) Sodium lauryl sulphate

Explanation:
1. Sodium lauryl sulphate, CH₃(CH₂)₁₀CH₂OSO₃⁻Na⁺, has a negatively charged hydrophilic head and is an anionic detergent.
2. Cetyltrimethylammonium bromide is cationic, glyceryl oleate is non-ionic and sodium stearate is a soap.

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

Question 6: Which of the following compounds is not an antacid?
(a) Aluminium hydroxide
(b) Cimetidine
(c) Phenelzine
(d) Ranitidine
Show Answer & Explanation

Answer: (c) Phenelzine

Explanation:
1. Aluminium hydroxide, cimetidine and ranitidine reduce stomach acidity.
2. Phenelzine is an antidepressant (a tranquilliser), not an antacid.

Teacher's Note:
1. Cimetidine and ranitidine are antihistamines that reduce acid secretion.

Question 7: Which one of the following types of drugs reduces fever?
(a) Tranquilliser
(b) Antibiotic
(c) Antipyretic
(d) Analgesic
Show Answer & Explanation

Answer: (c) Antipyretic

Explanation:
1. Antipyretics lower body temperature in fever.
2. Analgesics relieve pain, antibiotics act against bacteria and tranquillisers act on mental disorders.

Teacher's Note:
1. Antipyretic means fever reducing.

Question 8: Which of the following could act as a propellant for rockets?
(a) Liquid hydrogen + liquid nitrogen
(b) Liquid oxygen + liquid argon
(c) Liquid hydrogen + liquid oxygen
(d) Liquid nitrogen + liquid oxygen
Show Answer & Explanation

Answer: (c) Liquid hydrogen + liquid oxygen

Explanation:
1. A propellant needs a fuel and an oxidiser that react exothermically.
2. Liquid hydrogen is the fuel and liquid oxygen the oxidiser; nitrogen and argon do not take part in combustion.

Teacher's Note:
1. A rocket propellant is a fuel plus an oxidiser.

Question 9: The compound o-acetoxybenzoic acid (aspirin) is used as:
(a) an antiseptic
(b) an antibiotic
(c) an analgesic
(d) a pesticide
Show Answer & Explanation

Answer: (c) an analgesic

Explanation:
1. Aspirin is acetylsalicylic acid.
2. It relieves pain and reduces fever, so it is an analgesic.

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

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