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Question for DHFWS Nadia Laboratory Technician - Quiz / Questions / MCQ in English

Last Update on : October 11, 2026

Duration: 60 · Questions: 100 · Max Marks: 100

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Latest DHFWS Nadia Laboratory Technician Exam Question (Objective Questions), MCQ in English

Subjects : Laboratory Technician

Question Bank DHFWS Nadia Laboratory Technician Exam - English

Laboratory Technician

Q 1 :
What is the primary purpose of Sabouraud Dextrose Agar in mycology?
  1. A.To inhibit fungal growth
  2. B.To culture bacteria
  3. C.To stain fungal elements
  4. D.To promote fungal growth
Q 2 :
Which stain is commonly used to visualize fungal elements in a wet mount?
  1. A.Gram stain
  2. B.KOH (Potassium Hydroxide)
  3. C.Ziehl-Neelsen stain
  4. D.Hematoxylin-Eosin
Q 3 :
What type of specimen is most commonly used for diagnosing dermatophyte infections?
  1. A.Blood
  2. B.Skin scrapings
  3. C.Urine
  4. D.Stool
Q 4 :
Which fungus is typically associated with thrush in immunocompromised patients?
  1. A.Candida albicans
  2. B.Aspergillus fumigatus
  3. C.Cryptococcus neoformans
  4. D.Rhizopus oryzae
Q 5 :
What is the role of Calcofluor White in mycology?
  1. A.It inhibits fungal growth
  2. B.It measures antifungal susceptibility
  3. C.It differentiates bacterial species
  4. D.It enhances fungal fluorescence under UV light
Q 6 :
Which medium is preferred for culturing dimorphic fungi?
  1. A.Blood agar
  2. B.Brain Heart Infusion agar
  3. C.Sabouraud Dextrose Agar
  4. D.MacConkey agar
Q 7 :
What is the purpose of a biosafety cabinet in a mycology lab?
  1. A.To prevent contamination and protect the technician
  2. B.To store fungal cultures
  3. C.To incubate fungal cultures
  4. D.To perform DNA extraction
Q 8 :
Which test is used to identify Cryptococcus neoformans in cerebrospinal fluid?
  1. A.Urease test
  2. B.India ink preparation
  3. C.Carbohydrate assimilation test
  4. D.KOH mount
Q 9 :
What is the typical incubation temperature for fungal cultures?
  1. A.4°C
  2. B.45°C
  3. C.37°C
  4. D.25–30°C
Q 10 :
Which fungal structure is primarily observed during microscopic examination?
  1. A.Nucleus
  2. B.Hyphae
  3. C.Mitochondria
  4. D.Cell membrane
Q 11 :
What is the primary goal of antifungal susceptibility testing?
  1. A.To identify fungal species
  2. B.To determine effective antifungal drugs
  3. C.To culture bacteria
  4. D.To stain fungal elements
Q 12 :
Which fungus is commonly associated with pulmonary infections in immunocompromised patients?
  1. A.Trichophyton rubrum
  2. B.Microsporum canis
  3. C.Candida tropicalis
  4. D.Aspergillus fumigatus
Q 13 :
What is the purpose of the urease test in mycology?
  1. A.To detect bacterial contamination
  2. B.To measure fungal growth rate
  3. C.To differentiate fungal species
  4. D.To stain fungal spores
Q 14 :
Which sample is least likely to be used for mycological analysis?
  1. A.Nail clippings
  2. B.Saliva
  3. C.Blood
  4. D.Sputum
Q 15 :
What is the function of potato dextrose agar in mycology?
  1. A.To promote sporulation in fungi
  2. B.To inhibit fungal growth
  3. C.To culture viruses
  4. D.To perform biochemical tests
Q 16 :
Which biosafety level is typically required for handling pathogenic fungi like Histoplasma?
  1. A.BSL-1
  2. B.BSL-2
  3. C.BSL-3
  4. D.BSL-4
Q 17 :
What is the primary source of contamination in fungal cultures?
  1. A.Environmental molds
  2. B.Bacterial spores
  3. C.Viral particles
  4. D.Chemical residues
Q 18 :
Which fungal species is commonly identified using a germ tube test?
  1. A.Aspergillus niger
  2. B.Fusarium solani
  3. C.Rhizopus oryzae
  4. D.Candida albicans
Q 19 :
What is the purpose of a wet mount in mycology?
  1. A.To culture fungi
  2. B.To perform DNA sequencing
  3. C.To observe fungal structures microscopically
  4. D.To measure antifungal resistance
Q 20 :
Which antifungal drug is commonly tested in susceptibility assays?
  1. A.Penicillin
  2. B.Streptomycin
  3. C.Tetracycline
  4. D.Fluconazole
Q 21 :
What is the role of a laboratory information system (LIS) in mycology?
  1. A.To document procedures and results
  2. B.To culture fungi
  3. C.To stain fungal specimens
  4. D.To calibrate microscopes
Q 22 :
Which fungal infection is commonly diagnosed using skin scrapings?
  1. A.Cryptococcosis
  2. B.Aspergillosis
  3. C.Tinea corporis
  4. D.Histoplasmosis
Q 23 :
What is the primary use of chloramphenicol in fungal culture media?
  1. A.To promote fungal growth
  2. B.To enhance staining
  3. C.To inhibit bacterial growth
  4. D.To increase sporulation
Q 24 :
Which technique is used for definitive fungal identification?
  1. A.Gram staining
  2. B.Blood culture
  3. C.PCR and sequencing
  4. D.Wet mount
Q 25 :
What is the typical appearance of Aspergillus colonies on culture media?
  1. A.Velvety with powdery spores
  2. B.Smooth and creamy
  3. C.Waxy and translucent
  4. D.Shiny and moist
Q 26 :
Which specimen is used to diagnose fungal meningitis?
  1. A.Cerebrospinal fluid (CSF)
  2. B.Blood
  3. C.Urine
  4. D.Stool
Q 27 :
What is the purpose of cycloheximide in fungal culture media?
  1. A.To inhibit saprophytic fungi
  2. B.To promote yeast growth
  3. C.To enhance bacterial growth
  4. D.To stain fungal elements
Q 28 :
Which fungal structure is observed in a KOH preparation of dermatophytes?
  1. A.Budding yeast
  2. B.Septate hyphae
  3. C.Capsule
  4. D.Endospores
Q 29 :
What is the primary function of an incubator in a mycology lab?
  1. A.To maintain optimal temperature for fungal growth
  2. B.To sterilize media
  3. C.To perform DNA extraction
  4. D.To store specimens
Q 30 :
Which fungus is associated with a "spaghetti and meatball" appearance in KOH preparations?
  1. A.Trichophyton mentagrophytes
  2. B.Aspergillus flavus
  3. C.Candida glabrata
  4. D.Malassezia furfur
Q 31 :
What is the purpose of quality control in a mycology lab?
  1. A.To ensure accurate and reliable test results
  2. B.To culture bacteria
  3. C.To stain fungal specimens
  4. D.To calibrate microscopes
Q 32 :
Which test differentiates Candida species from other yeasts?
  1. A.Urease test
  2. B.Germ tube test
  3. C.India ink preparation
  4. D.KOH mount
Q 33 :
What is the typical growth time for most fungal cultures?
  1. A.24 hours
  2. B.1–4 weeks
  3. C.48–72 hours
  4. D.6–8 weeks
Q 34 :
Which fungus is commonly associated with bird droppings?
  1. A.Cryptococcus neoformans
  2. B.Candida albicans
  3. C.Aspergillus niger
  4. D.Rhizopus oryzae
Q 35 :
What is the primary purpose of a tease mount in mycology?
  1. A.To culture fungi
  2. B.To measure antifungal susceptibility
  3. C.To perform biochemical tests
  4. D.To observe fungal morphology
Q 36 :
Which antifungal is commonly used to treat Candida infections?
  1. A.Amphotericin B
  2. B.Penicillin
  3. C.Ciprofloxacin
  4. D.Azithromycin
Q 37 :
What is the role of a laminar flow hood in a mycology lab?
  1. A.To store fungal cultures
  2. B.To perform DNA sequencing
  3. C.To incubate fungal cultures
  4. D.To provide a sterile working environment
Q 38 :
Which fungal infection is commonly diagnosed using sputum samples?
  1. A.Tinea pedis
  2. B.Aspergillosis
  3. C.Candidiasis
  4. D.Sporotrichosis
Q 39 :
What is the primary advantage of using molecular methods in fungal identification?
  1. A.Faster culture growth
  2. B.Lower cost than microscopy
  3. C.High specificity and accuracy
  4. D.Simpler sample preparation
Q 40 :
Which fungal species is associated with rose gardener’s disease?
  1. A.Aspergillus fumigatus
  2. B.Candida albicans
  3. C.Sporothrix schenckii
  4. D.Cryptococcus gattii
Q 41 :
What is the purpose of carbohydrate assimilation tests in mycology?
  1. A.To identify yeast species
  2. B.To stain fungal elements
  3. C.To culture molds
  4. D.To measure antifungal resistance
Q 42 :
Which fungus is commonly identified by its "spider web" colony morphology?
  1. A.Fusarium solani
  2. B.Aspergillus niger
  3. C.Rhizopus oryzae
  4. D.Penicillium marneffei
Q 43 :
What is the primary biosafety concern when handling fungal cultures?
  1. A.Aerosolized spores
  2. B.Chemical spills
  3. C.Electrical hazards
  4. D.Radiation exposure
Q 44 :
Which stain is used to detect Pneumocystis jirovecii in respiratory specimens?
  1. A.KOH
  2. B.Giemsa stain
  3. C.Gram stain
  4. D.Ziehl-Neelsen stain
Q 45 :
What is the purpose of a negative control in antifungal susceptibility testing?
  1. A.To ensure test reliability
  2. B.To promote fungal growth
  3. C.To stain fungal elements
  4. D.To culture bacteria
Q 46 :
Which fungal infection is associated with "black mold"?
  1. A.Aspergillosis
  2. B.Candidiasis
  3. C.Mucormycosis
  4. D.Histoplasmosis
Q 47 :
What is the primary use of lactophenol cotton blue in mycology?
  1. A.To culture fungi
  2. B.To stain fungal structures for microscopy
  3. C.To inhibit bacterial growth
  4. D.To perform DNA extraction
Q 48 :
Which fungus is commonly associated with systemic infections in AIDS patients?
  1. A.Trichophyton rubrum
  2. B.Microsporum canis
  3. C.Aspergillus flavus
  4. D.Histoplasma capsulatum
Q 49 :
What is the purpose of a positive control in mycology quality control?
  1. A.To inhibit fungal growth
  2. B.To verify test accuracy
  3. C.To stain fungal specimens
  4. D.To culture bacteria
Q 50 :
Which fungal structure is characteristic of dermatophytes?
  1. A.Arthroconidia
  2. B.Budding yeast
  3. C.Capsule
  4. D.Endospores

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