Guaranteed Success Guide: Phenols Disinfectants Antibiotics MCQs Class 12 Chemistry Exam Preparation

Guaranteed Success Guide: Phenols Disinfectants Antibiotics MCQs Class 12 Chemistry Exam Preparation

The chapter “Chemistry in Everyday Life” is an important part of Class 12 Chemistry, especially when it comes to understanding phenols, disinfectants, and antibiotics. These topics are not only relevant for board exams but also for competitive exams like NEET and CUET. Practicing Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation helps aspirants develop a clear understanding of these concepts and apply them effectively in exams.

To begin with, phenols are organic compounds that play a significant role in antiseptic and disinfectant formulations. They possess mild antiseptic properties and are often used in diluted forms to prevent microbial growth. By solving Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation, aspirants can better understand how phenols differ from alcohols and why their chemical structure makes them suitable for such applications.

Disinfectants are chemicals used to kill microorganisms on non-living surfaces, while antiseptics are applied to living tissues. This distinction is crucial and frequently asked in exams. Regular practice of Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation helps aspirants clearly differentiate between these terms and avoid common mistakes.

Antibiotics, on the other hand, are chemical substances used to treat infections caused by bacteria. They either kill bacteria (bactericidal) or inhibit their growth (bacteriostatic). Understanding this classification becomes easier when aspirants consistently practice Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation, as they are exposed to different types of questions covering these concepts.

One of the main benefits of solving Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation is that it enhances conceptual clarity. Instead of memorizing definitions, aspirants begin to understand the underlying principles of drug action, structure, and function. This deeper understanding is essential for tackling application-based questions.

Furthermore, Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation are highly beneficial for improving speed and accuracy. Since MCQs require quick thinking, practicing them regularly helps aspirants develop the ability to analyze and answer questions efficiently within a limited time frame.

Another important advantage of Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation is that it exposes aspirants to a wide range of question patterns. From assertion-reason to match-the-following and case-based questions, these MCQs prepare aspirants for every possible format that may appear in exams.

In addition, Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation reinforce important examples such as phenol, chloroxylenol, penicillin, and tetracycline. Repeated exposure to these examples helps aspirants remember their properties and uses more effectively, which is crucial for scoring high marks.

From a practical perspective, Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation also help aspirants connect theoretical knowledge with real-life applications. Understanding how disinfectants are used in hospitals or how antibiotics treat infections makes the subject more interesting and easier to retain.

Time management is another area where Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation prove extremely useful. Regular practice ensures that aspirants can solve questions quickly and confidently during exams, leaving more time for revision and checking answers.

Moreover, Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation are essential for last-minute revision. They provide a quick overview of important concepts and help aspirants identify weak areas that need improvement before the exam.

Consistency is key when it comes to mastering this topic. By regularly solving Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation, aspirants can gradually improve their understanding, reduce errors, and build confidence over time.

Phenols Disinfectants Antibiotics MCQs Class 12 Exam Preparation:

1.

Which of the following does not correctly match?
a) Salivary amylase – Lipase enzyme
b) Butter – Fat
c) Oxytocin – Hormone
d) Oxytocin – Enzyme

Answer: d


2.

Which is not an analgesic?
a) Ibuprofen
b) Naproxen
c) Aspirin
d) Valium

Answer: d


3.

Which is not an antibiotic?
a) Penicillin
b) Oxytocin
c) Erythromycin
d) Tetracycline

Answer: b


4.

Which is bacteriostatic?
a) Penicillin
b) Erythromycin
c) Bithional
d) Ofloxacin

Answer: b


5.

Match List-I and List-II:

A Thymine
B Thiamine
C Insulin
D Pepsin
E Phospholipids

I Pyrimidine base
II Enzyme
III Cell wall component
IV Hormone
V Vitamin B₁

a) I, V, IV, II, III
b) I, V, IV, III, II
c) I, IV, V, III, II
d) II, V, IV, III, I

Answer: a


6.

Salts of sorbic and propionic acid are
a) Antioxidants
b) Flavoring agents
c) Food preservatives
d) Nutritional supplements

Answer: c


7.

Bactericidal antibiotics pair
a) (i), (iii)
b) (ii), (iv)
c) (ii), (v)
d) (i), (v)

Answer: b


8.

Kala-azar is cured by
a) Colloidal antimony
b) Milk of magnesia
c) Argyrol
d) Silver

Answer: a


9.

Chelating ligand in therapy
a) D-penicillamine
b) Oxalate
c) EDTA
d) Ethylenediamine

Answer: a


10.

Match List-I and II:

A Dimetapp
B Furacine
C Phenelzine
D Aspirin
E Norethindrone

a) V, III, I, II, IV
b) V, III, IV, II, I
c) V, III, IV, I, II
d) V, II, I, IV, III

Answer: a


11.

Narcotic analgesic
a) Aspirin
b) Paracetamol
c) Codeine
d) Cimetidine

Answer: c


12.

0.2% phenol is used as
a) Antibiotic
b) Antiseptic
c) Disinfectant
d) Antihistamine

Answer: b


13.

Barbiturates are
a) Hypnotics
b) Antimicrobials
c) Analgesics
d) Antiallergics

Answer: a


14.

Antifertility drug
a) Bithional
b) Ofloxacin
c) Norethindrone
d) Terpineol

Answer: a


15.

Arsenic drug
a) Prontosil
b) Salvarsan
c) Sulphapyridine
d) Ofloxacin

Answer: b


16.

Acetyl salicylic acid is
a) Antioxidant
b) Analgesic
c) Antibiotic
d) Anaesthetic

Answer: b


17.

Not an antiseptic
a) Boric acid
b) Iodoform
c) H₂O₂
d) Potassium sulphite

Answer: d


18.

Bacteriostatic antibiotic
a) Tetracycline
b) Aminoglycosides
c) Penicillin
d) Ofloxacin

Answer: a


19.

Selective weed killer
a) Para-acid
b) 2,4-D
c) 2,4,6-T
d) Salt

Answer: b


20.

Cancer drug
a) cis-[Pt(en)₂Cl₂]
b) cis-[PtCl₂(NH₃)₂]
c) trans-[Pt(en)₂Cl₂]
d) trans-[Pt(NH₃)₂Cl₂]

Answer: b


21.

Not broad spectrum
a) Penicillin
b) Amoxicillin
c) Chloramphenicol
d) Ampicillin

Answer: a


22.

Veronal is
a) Analgesic
b) Antihistamine
c) Antibiotic
d) Tranquilizer

Answer: d


23.

Not tranquilizer
a) Meprobamate
b) Equanil
c) Chlordiazepoxide
d) Bromopheniramine

Answer: d


24.

Antiseptic
a) Chloramphenicol
b) Bithional
c) Cimetidine
d) Diazepam

Answer: b


25.

Not analgesic
a) Ofloxacin
b) Penicillin
c) Aminoglycosides
d) Paracetamol

Answer: d


26.

Tranquilizer
a) Aspirin
b) Valium
c) Penicillin
d) Sulphamilamide

Answer: b


27.

Bactericidal antibiotic
a) Ofloxacin
b) Chloramphenicol
c) Erythromycin
d) Tetracycline

Answer: a


28.

Isotope causing skin disease
a) I¹³¹
b) S³⁵
c) P³¹
d) None

Answer: b


29.

Potassium metabisulphite is
a) Preservative
b) Antioxidant
c) Sweetener
d) Both

Answer: d


30.

Antipyretics are used to
a) Relieve pain
b) Reduce temperature
c) Kill microbes
d) Reduce anxiety

Answer: b

phenols disinfectants antibiotics mcqs class 12 Chemistry exam preparation

Conclusion on Phenols Disinfectants Antibiotics MCQs Class 12 Chemistry Exam Preparation

In conclusion, Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation is a powerful tool for effective learning and exam success. It not only strengthens conceptual knowledge but also enhances problem-solving skills and time management. By consistently practicing Phenols disinfectants antibiotics mcqs class 12 chemistry exam preparation, aspirants can achieve excellent results in both board exams and competitive examinations.

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