The universal biohazard symbol is used for:

a) Chemical waste b) Radioactive waste c) Infectious waste d) Glass waste

The ideal contact time for 1% sodium hypochlorite for surface disinfection is:

a) 1 min b) 10 min c) 20 min d) 30 min

Which of the following PPE provides highest protection during sample processing?

a) Surgical mask b) N95 mask c) Gloves only d) Face shield only

Yellow bag in biomedical waste is used for: *(PYQ)*

a) Glassware b) Human anatomical waste c) Sharps d) Plastic disposables

A lab technician spills 5 mL of blood on the bench. What is the correct first step?

a) Wipe with tissue b) Wash with water c) Cover with disinfectant and allow contact time d) Ignore if small

Autoclaving kills microorganisms by:

a) Dry heat b) Protein denaturation c) Radiation d) Oxidation

Sharps injury should be reported:

a) Within 24 hours b) Immediately c) After symptoms appear d) After shift ends

Prolonged EDTA storage (>6 hours at room temperature) causes:

A “left shift” in CBC indicates:

On an automated hematology analyzer, the presence of NRBCs can falsely:

a) Increase Hb b) Increase WBC count c) Decrease RBC count d) Increase PCV

A peripheral smear shows tear drop cells, nucleated RBCs, and leukoerythroblastic picture. Most likely diagnosis:

a) Iron deficiency anemia b) Myelofibrosis c) Aplastic anemia d) Thalassemia minor

A patient’s CBC shows:
• Hb: 7.2 g/dL
• MCV: 68 fL • MCHC: Low • RBC: Decreased Most likely diagnosis:

A patient has MCV 68 fL and RDW 12%. Most likely diagnosis: