According to Biomedical Waste Management Rules 2016, which color-coded container is designated for disposing of human anatomical waste and soiled cotton dressings?

Yellow non-chlorinated plastic bag

Red recyclable plastic container

Blue cardboard box with puncture-proof liner

White translucent puncture-proof container

Under the BMW Rules 2016, which container is specifically mandated for sharps including contaminated needles, scalpels, and blades?

White translucent puncture-proof tamper-proof container

Red puncture-resistant container

Cardboard box with blue marking

What is the prescribed method and container for disposing of broken glassware and contaminated glass medicine vials under BMW guidelines?

Puncture-proof blue box or container with blue colored marking

Yellow bag followed by deep burial

Red container followed by shredding

White puncture-proof container followed by encapsulation

Which temperature, pressure, and exposure time are commonly used as a reference cycle for routine autoclaving of biohazardous laboratory waste?

121°C at 15 psi for 15 to 20 minutes

100°C at 10 psi for 10 minutes

115°C at 12 psi for 45 minutes

134°C at 30 psi for 60 minutes

What is the immediate first-aid step following an accidental sharps injury or needle stick contaminated with suspected HBV- or HIV-positive blood?

Wash the puncture site thoroughly under running water with soap without squeezing or scrubbing

Squeeze the puncture wound forcefully to express contaminated blood

Submerge the wounded finger in 10% sodium hypochlorite disinfectant solution

Apply concentrated povidone-iodine and tightly seal with an occlusive dressing

What is the recommended immediate first-aid action following skin contact with an infectious clinical specimen in the laboratory?

Wash the affected area thoroughly with soap and running water

Wipe the area with 70% isopropanol or ethyl alcohol

Apply 1% sodium hypochlorite disinfectant solution

Allow aerosol settling for 30 minutes before cleaning

What concentration of freshly prepared sodium hypochlorite solution is routinely recommended for neutralizing a large blood spill (>10 mL) in a clinical laboratory?

1.0% (10,000 ppm available chlorine)

0.05% (500 ppm available chlorine)

0.1% (1,000 ppm available chlorine)

5.0% (50,000 ppm available chlorine)

Which class of fire extinguisher is specifically designed and rated for fires involving energized electrical equipment like centrifuges and automated analyzers?

Class C (Carbon dioxide / Dry chemical)

Class D (Dry powder for combustible metals)

What chemical neutralizing agent should be gently poured onto a concentrated hydrochloric acid (HCl) benchtop spill before wiping?

Sodium bicarbonate powder (NaHCO3)

Concentrated sodium hydroxide (NaOH)

Under Biomedical Waste Management Rules 2016, which color-coded container and treatment route is designated for amputated tissues and soiled plaster casts?

Yellow non-chlorinated bag (Incineration or Plasma Pyrolysis)

Red recyclable plastic container (Autoclaving followed by shredding)

Blue marked box (Chemical disinfection followed by glass recycling)

White translucent container (Sharps pit encapsulation or autoclaving)

A Class II biological safety cabinet utilizes HEPA filters. What is the minimum particle filtration efficiency guaranteed by a standard HEPA filter?

99.97% for particles 0.3 µm in diameter

90.00% for particles 0.5 µm in diameter

95.50% for particles 1.0 µm in diameter

98.00% for particles 0.1 µm in diameter

What chemical compound is routinely employed to clean and disinfect biological spills containing prions (Creutzfeldt-Jakob Disease agents)?

1 N Sodium hydroxide (NaOH) or 20,000 ppm sodium hypochlorite for 1 hour

2% Glutaraldehyde solution for 15 minutes

0.5% Chlorhexidine gluconate for 5 minutes

What should be used to clean optical lenses of laboratory microscopes while minimizing the risk of damaging lens coatings or cemented layers?

Manufacturer-approved lens-cleaning solution; 70% isopropyl alcohol only if permitted by the manufacturer

Concentrated sodium hypochlorite

When transporting infectious clinical specimens from an outpatient collection booth to a centralized testing laboratory, which packaging system is mandated?

Triple packaging system (primary receptacle, secondary leak-proof packaging, and rigid outer container)

Screw-capped glass cylinder inside an open wire tray

What is the biological hazard symbol designed to warn laboratory technologists about?

Infectious biological agents capable of causing disease in humans

Toxic non-radioactive chemical carcinogens

High-voltage electrical circuits

What is the primary function of a Chemical Fume Hood in a clinical laboratory?

Containment and venting of volatile toxic chemical vapors away from personnel

Laminar HEPA-filtered protection for infectious biological pathogens

Neutralization and absorption of accidental liquid chemical releases

Immediate emergency irrigation of the ocular surface after a chemical splash

What is the post-exposure prophylaxis (PEP) initiation timeline window recommended following an occupational exposure to known HIV-positive fluids?

Within 72 hours, preferably within the first 2 hours

After 7 days following baseline antibody confirmation

Between 24 to 48 hours only after repeat testing

In the handling of ethidium bromide or xylene, in which designated containment area should technicians prepare working solutions?

Chemical Fume Hood with duct exhaust to the outside

Class I Biological Safety Cabinet

Laminar horizontal air flow bench

What is the primary risk associated with vigorously pulling apart a blood collection tube stopper or rapidly discharging blood from a syringe without removing the needle?

Generation of infectious aerosols and laboratory acquired infections

Hemodilution of cellular components

Deactivation of plasma complement pathways

Immediate oxidation of intracellular glutathione

What is the primary action of quaternary ammonium compounds (QACs) as disinfectants on microbial cells?

Disruption of cell membranes and denaturing membrane proteins

Cross-linking of DNA double strands

Alkylating ribosomal peptide bonds

Oxidizing structural thiol groups to disulfides

RRB LA UT06 – MLT Fundamentals Practice Test 2: Lab Safety & BMW Rules

Prakash Joshi October 30, 2026 7 views 30 Questions

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RRB Laboratory Assistant Grade II (MLT) 34 tests in this series · Click to view included tests ₹149₹299

Prepare confidently for the Railway Recruitment Board (RRB) Laboratory Assistant Grade II Computer Based Test (CEN 05/2026) with our dedicated 37-test series for DMLT and B.Sc MLT candidates. Following the exact official RRB exam pattern (100 Questions, 90 Minutes, 1/3rd negative marking), this series offers 28 Core MLT Subject Tests, 4 Non-Technical Tests (Bilingual), and 5 Full-Length CBT Mock Tests with clear laboratory explanations. How We Divided the Official Syllabus into Units Every subject listed in the official RRB Lab Assistant syllabus has been mapped into 9 logical units so you can practice topic by topic: Unit 1: Anatomy & Physiology (Tests 1–4) — Covers Cell Structure, Epithelial & Connective Tissues, Skeletal & Muscular Systems, Heart & Blood Circulation, Respiratory Gas Exchange, Nephron & Urine Formation, Nervous System, and Endocrine Glands. Unit 2: Fundamentals of Medical Laboratory Technology (Tests 5–7) — Covers Laboratory Organization, Cleaning & Maintenance of Glassware, Centrifuges, Balances, Colorimeters, Optical Microscopy, Biomedical Waste Management (BMW Rules 2016), Biosafety Levels, and Quality Assurance (IQC, EQAS, Westgard Rules). Unit 3: Biochemistry & Clinical Biochemistry (Tests 8–11) — Covers Biomolecules, Blood Glucose Estimation (GOD-POD, OGTT, HbA1c), Renal Function Tests (Jaffe's Creatinine, BUN, Uric Acid), Liver Function Tests (van den Bergh Bilirubin, SGOT, SGPT, ALP), Lipid Profile, Serum Proteins, Electrolytes, and Cardiac Markers. Unit 4: Microbiology, Mycology & Virology (Tests 12–15) — Covers Bacterial Morphology, Culture Media (Blood, MacConkey, TCBS, LJ), Gram Staining, Albert's & Ziehl-Neelsen (ZN) Acid-Fast Staining, Biochemical Identification, Kirby-Bauer Antibiotic Sensitivity Testing, Fungal Mounts (KOH, India Ink), ELISA, and Viral Rapid Tests. Unit 5: Pathology & Histopathology (Tests 16–19) — Covers Tissue Fixation (10% Formalin, Bouin's, Zenker's Fluid), Dehydration, Clearing, Paraffin Embedding, Rotary Microtomy, Harris Hematoxylin & Eosin (H&E) Staining, Special Stains (PAS, Perls' Stain), and Exfoliative Cytology (Pap Stain, FNAC). Unit 6: Haematology & Coagulation (Tests 20–24) — Covers Phlebotomy, Anticoagulants (EDTA, Citrate, Heparin, Fluoride) & Vacutainer Color Codes, Hemoglobin Estimation (Drabkin's Method), Neubauer Chamber Cell Counting, Red Cell Indices (PCV, MCV, MCH, MCHC), ESR, Peripheral Blood Smear, Coagulation Tests (PT/INR, aPTT), Anemias, and Leukemias. Unit 7: Blood Banking & Transfusion Medicine (Tests 25–26) — Covers ABO & Rh Blood Grouping (Forward & Reverse Typing), Cross-Matching, Direct & Indirect Coombs Tests (DAT/IAT), Blood Component Separation, Storage Temperatures (PRBC, FFP, Platelets), and Transfusion Reactions. Unit 8: Clinical Pathology & Body Fluid Analysis (Tests 27–28) — Covers Physical, Chemical & Microscopic Urinalysis (Proteinuria, Ketonuria, Casts & Crystals), Cerebrospinal Fluid (CSF) Analysis, Pleural/Ascitic Fluid, Semen Analysis, and Automated Hematology Analyzers. Unit 9: Non-Technical Section (Tests 29–32) — Covers Class 10 General Science (Physics, Chemistry, Biology), General Arithmetic, General Intelligence & Reasoning, and General Awareness (English & Hindi). Full-Length CBT Mock Tests (Tests 33–37) — 5 complete 100-question mock papers (70 MLT Technical + 30 Non-Technical) for full exam simulation. Buy Series

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About This Practice Test:
This timed online practice test reviews laboratory safety protocols, biosafety levels, chemical and biological spill management, and the Biomedical Waste Management Rules, 2016. It covers waste segregation, autoclaving principles and validation, biological indicators, and universal precautions relevant to infection prevention and laboratory practice. Use this test to strengthen your understanding and prepare for laboratory and paramedical competitive examinations.

Syllabus Covered:
Biomedical Waste Management Rules, 2016: colour-coded waste segregation categories (Yellow, Red, White, and Blue)
Autoclaving principles, commonly used cycle parameters (including 121°C and 15 psi where applicable), and biological indicators such as Geobacillus stearothermophilus
Biosafety Levels (BSL-1 to BSL-4) and Biological Safety Cabinet classifications (Class I, II, and III)
Chemical spill response, the NFPA 704 hazard diamond, and emergency eyewash procedures
Needlestick injury response, post-exposure prophylaxis (PEP), hepatitis B immunisation, and laboratory aerosol risks

Applicable Examinations:
RRB Laboratory Assistant and other RRB Paramedical exam preparation
DSSSB Lab Technician, ESIC Medical Laboratory Technician (MLT), AIIMS Paramedical, and CGHS-related laboratory recruitment exam preparation, where the syllabus is applicable
State-level paramedical and medical laboratory technician examinations

Test Instructions & Features:
30 Questions | Timed Online Test
Detailed explanations for every question
Instant scorecard and performance analysis on Solotutes.com

Written & Verified by Prakash Joshi

Expert Faculty

Prakash Joshi is a pharmacy professional and Zoology graduate with an interest in life sciences, biology, and competitive exam preparation. Combining his pharmacy background with his academic knowledge of Zoology, he contributes to the development of educational content, practice questions, and exam-oriented study materials at SoloTutes. His work focuses on simplifying complex concepts, providing accurate and useful learning resources, and helping students prepare effectively for competitive examinations. Through SoloTutes, he aims to make quality educational content accessible to aspirants across India.

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Categorized Under

DMLT RRB Lab Assistant Grade II MLT Fundamentals & Lab Safety RRB Laboratory Assistant Grade II (MLT)

Tags: #Autoclave Validation MCQs #Biomedical Waste Management Quiz #Biomedical Waste Management Rules 2016 MCQs #DMLT Lab Safety Test #DSSSB Lab Technician Practice Test #Lab Safety Practice Test #Medical Lab Biosafety Online Test #Paramedical Mock Test #RRB Lab Assistant Test Series #Solotutes test series

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