Practice MCQ For Govt Pharmacist Exam, in this article we will solve, Practice MCQ on topic antimicrobials under the subject Pharmaceutical inorganic chemistry of first semester. Read following article for your reference.
Antimicrobial Agents » PHARMACAREERS
Which of the following is a mechanism of action for antimicrobials?
A) Inhibition of cell wall synthesis
B) Disruption of cell membrane integrity
C) Inhibition of protein synthesis
D) All of the above
Antimicrobial classification based on the spectrum of activity includes:
A) Broad-spectrum
B) Narrow-spectrum
C) Extended-spectrum
D) All of the above
Potassium permanganate exerts its antimicrobial effect primarily through:
A) Oxidation of microbial cells
B) Reduction of microbial metabolism
C) Disruption of microbial DNA
D) Competitive inhibition of enzymes
Boric acid is commonly used as an antiseptic in which form?
A) Powder
B) Solution
C) Ointment
D) All of the above
Hydrogen peroxide’s antimicrobial action is due to its ability to:
A) Donate electrons to microbial cells
B) Accept electrons from microbial cells
C) Generate free radicals upon decomposition
D) Chelate metal ions necessary for microbial growth
Chlorinated lime is also known as:
A) Calcium hypochlorite
B) Sodium hypochlorite
C) Chlorine dioxide
D) Chlorhexidine
Iodine preparations used as antiseptics include:
A) Tincture of iodine
B) Iodophors
C) Lugol’s solution
D) All of the above
The primary use of potassium permanganate in antimicrobial preparations is for:
A) Disinfecting drinking water
B) Treating fungal infections
C) Cleansing wounds
The use of boric acid as an antimicrobial is limited due to its:
A) Low efficacy
B) Potential toxicity
C) High cost
D) Unstable nature
Hydrogen peroxide is effective against which types of microorganisms?
A) Bacteria
B) Viruses
C) Fungi
D) All of the above
Chlorinated lime acts as a disinfectant by:
A) Precipitating microbial proteins
B) Oxidizing microbial cells
C) Disrupting microbial DNA replication
D) Inhibiting microbial enzyme activity
Iodine is most effective against:
A) Gram-positive bacteria
B) Gram-negative bacteria
C) Mycobacteria
D) Spores
Potassium permanganate’s role in treating dermatological conditions is due to its:
A) Keratolytic properties
B) Antifungal activity
C) Antiviral activity
D) Astringent properties
Boric acid’s mechanism of action involves:
A) Inhibition of nucleic acid synthesis
B) Disruption of the cytoplasmic membrane
C) Interference with microbial metabolism
D) All of the above
The decomposition of hydrogen peroxide into water and oxygen is catalyzed by:
A) Catalase
B) Peroxidase
C) Superoxide dismutase
Which of the following is not a characteristic of chlorinated lime?
A) It is a strong oxidizing agent
B) It has a high pH
C) It is used in water treatment
D) It is a reducing agent
Iodophors are complexes of iodine with:
A) Sodium iodide
B) Potassium iodide
C) A surfactant
D) An alcohol
The antimicrobial activity of potassium permanganate is reduced in the presence of:
A) Organic matter
B) Alkaline pH
C) High temperatures
D) UV light
Boric acid is least effective against which type of microorganisms?
A) Yeasts
B) Molds
C) Gram-positive bacteria
D) Protozoa
Hydrogen peroxide works best at which pH level?
A) Acidic
B) Neutral
C) Basic
D) It is effective across a wide pH range
Chlorinated lime can be used to disinfect:
A) Surfaces
B) Water
C) Medical instruments
Iodine’s effectiveness as an antimicrobial is due to its:
A) Ability to disrupt protein and nucleic acid structure and synthesis
B) Oxidizing properties
C) Reduction of microbial metabolism
D) All of the above
Potassium permanganate is contraindicated for use in which condition?
A) Infected wounds
B) Dermatitis
C) Dry skin conditions
D) Open wounds
Boric acid can be toxic when:
A) Ingested in large quantities
B) Used on large wound areas
C) Applied to broken skin
D) All of the above
Hydrogen peroxide is not recommended for use in deep wounds because:
A) It can cause air embolism
B) It is not effective against anaerobic bacteria
C) It can damage granulation tissue
D) All of the above
Chlorinated lime is not suitable for use on:
A) Metals
B) Plastics
C) Glassware
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