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100+ Free Postal Exam 916 Practice Questions

Pass your USPS Postal Exam 916 — Custodial Maintenance / Laborer Custodial exam on the first try — instant access, no signup required.

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A look-up table shows: 'BACTERIA-X disinfectant — 1 oz per gallon for routine; 2 oz per gallon for biohazard / blood spill.' You need to clean a blood spill. How much per gallon?

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Key Facts: Postal Exam 916 Exam

70

Minimum Passing Score

USPS

Free

Exam Fee

USPS federal hiring assessment

100

Total Questions

Across 4 sections

~60 min

Time Limit

USPS

4

Tested Sections

Vocabulary, Safety, Cleaning, Instructions

~2 yrs

Score Validity

Eligibility list

Postal Exam 916 is a free USPS hiring assessment for Custodial Maintenance / Laborer Custodial roles. It is about 60 minutes long across four sections — Vocabulary & Reading, Basic Safety, General Cleaning, and Following Instructions. Minimum passing score is 70, but USPS hires from the top of the ranked list.

Sample Postal Exam 916 Practice Questions

Try these sample questions to test your Postal Exam 916 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1On a cleaning-product label, what does the word 'disinfectant' specifically mean?
A.A product that removes visible dirt only
B.A product that kills nearly all bacteria and viruses on a hard surface when used as directed
C.A product that makes a surface smell clean
D.A product that polishes floors
Explanation: A disinfectant is an EPA-registered product that destroys or inactivates nearly all pathogenic microorganisms on hard, non-porous surfaces when used at the labeled contact time. Cleaners only remove dirt; sanitizers reduce bacteria but do not eliminate them.
2An SDS (Safety Data Sheet) is required for every chemical in the building. Which section of an SDS lists the personal protective equipment needed?
A.Section 1 — Identification
B.Section 4 — First Aid Measures
C.Section 8 — Exposure Controls / Personal Protection
D.Section 16 — Other Information
Explanation: OSHA's standardized 16-section SDS lists PPE requirements (gloves, goggles, respirator) under Section 8 — Exposure Controls / Personal Protection. Memorizing the section numbers makes the exam's reading items much faster.
3A work order says: 'Clean and disinfect all restroom fixtures by 0900.' What does 'fixtures' refer to?
A.Light bulbs and ceiling tiles
B.Toilets, urinals, sinks, and dispensers permanently installed in the restroom
C.Cleaning chemicals stored in the closet
D.Custodial uniforms
Explanation: In facility maintenance, 'fixtures' means the permanently installed plumbing and dispenser units in a restroom — toilets, urinals, sinks, soap dispensers, paper-towel dispensers. The vocabulary section repeatedly tests this kind of trade term.
4On a GHS chemical label, a pictogram showing a flame indicates the product is:
A.Corrosive to metals
B.Flammable
C.An eye irritant
D.Radioactive
Explanation: The GHS (Globally Harmonized System) flame pictogram means the product is flammable, self-reactive, or pyrophoric. Memorize the nine GHS pictograms — they show up directly on the 916 vocabulary section.
5Which term means 'a substance that physically removes dirt and soil but does not necessarily kill germs'?
A.Disinfectant
B.Sanitizer
C.Detergent / cleaner
D.Sterilant
Explanation: A detergent or general-purpose cleaner removes soil through surfactant action but is not registered to kill microorganisms. Cleaning must happen BEFORE disinfecting because disinfectants cannot penetrate organic soil.
6A label says 'Dilute 1:64 with water.' What does that ratio mean?
A.1 gallon of chemical to 64 gallons of water
B.1 ounce of chemical to 64 ounces of water
C.1 part chemical to 64 parts water
D.1 cup of chemical to 64 cups of finished solution, regardless of the water amount
Explanation: Dilution ratios on cleaning labels are part-to-part: 1:64 means 1 part chemical added to 64 parts water. In a standard 1-gallon (128 oz) bucket, that's 2 oz of chemical to 128 oz of water.
7Which word best matches the definition: 'a tool used to clean carpet by suction'?
A.Squeegee
B.Vacuum
C.Buffer
D.Auto-scrubber
Explanation: A vacuum cleaner removes soil from carpet through suction. A buffer polishes floors, an auto-scrubber scrubs and recovers water on hard floors, and a squeegee pulls liquid across glass or floor surfaces.
8A daily checklist shows the column heading 'Frequency'. What does 'Frequency' mean in this context?
A.Which custodian performs the task
B.How often the task must be done (daily, weekly, monthly)
C.Which chemical to use
D.How loud the equipment is
Explanation: On a cleaning schedule or work-order log, 'Frequency' means how often a task is required — daily, weekly, monthly, or quarterly. The reading section tests common form headings like Frequency, Area, and Assigned-To.
9Which of the following BEST defines 'biohazard'?
A.Any spilled cleaning chemical
B.A biological substance such as blood, body fluids, or human waste that may carry infectious agents
C.A broken light fixture
D.Trash that smells bad
Explanation: A biohazard is a biological substance — blood, body fluids, vomit, feces, or contaminated sharps — that could transmit disease. Custodians handle biohazards using bloodborne-pathogen procedures (PPE + EPA-registered disinfectant + red bag disposal).
10A label states the product has a 'contact time of 10 minutes'. What must you do?
A.Spray the surface, wipe immediately
B.Spray the surface and keep it visibly wet for at least 10 minutes before wiping
C.Wait 10 minutes before spraying the next surface
D.Use the product for no more than 10 minutes total
Explanation: Contact time (or 'dwell time' / 'wet time') is the minimum number of minutes a disinfectant must stay wet on the surface to kill the listed organisms. Wiping it off too soon makes the product ineffective even if you used the right chemical.

About the Postal Exam 916 Exam

The USPS Postal Exam 916 is the hiring assessment for Custodial Maintenance and Laborer Custodial positions at USPS facilities. The exam covers cleaning vocabulary, basic safety, general cleaning procedures, and following written instructions — the core skills a USPS custodian uses every shift.

Questions

100 scored questions

Time Limit

~60 minutes total

Passing Score

70+

Exam Fee

Free (United States Postal Service (USPS))

Postal Exam 916 Exam Content Outline

25%

Vocabulary & Reading

Custodial cleaning terms, label reading, SDS basics, work-order comprehension

20%

Basic Safety

PPE, slip/trip hazards, lifting technique, chemical handling, OSHA HazCom, lockout/tagout

30%

General Cleaning

Cleaning chemicals & uses, mop types, vacuum maintenance, restroom sanitation, biohazard cleanup, dilution ratios

15%

Following Instructions

Route sheets, work order priority, look-up tables, schedule reading

10%

USPS-Specific Tasks

Custodial role at a postal facility, building security, package handling around custodial work

How to Pass the Postal Exam 916 Exam

What You Need to Know

  • Passing score: 70+
  • Exam length: 100 questions
  • Time limit: ~60 minutes total
  • Exam fee: Free

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

Postal Exam 916 Study Tips from Top Performers

1Memorize the never-mix list — bleach + ammonia produces toxic chloramine gas. This shows up on safety items every form.
2Learn the GHS pictograms (skull = acute toxicity, flame = flammable, exclamation = irritant) — they appear in Vocabulary & Reading.
3Always lift with the legs, keep the load close, and do not twist — the safety section tests this directly.
4Clean restrooms top-down and clean-to-dirty (mirrors first, toilets last) — this sequence is the expected answer on procedure items.
5On Following Instructions items, read the entire work order before answering — many distractors fit only part of the instructions.

Frequently Asked Questions

What is the passing score on USPS Postal Exam 916?

70 is the minimum passing score on Postal Exam 916. Because USPS hires from a ranked eligibility list, you should aim for 85 or higher to be in the top tier USPS contacts first as custodial positions open.

How long does USPS Postal Exam 916 take?

The full exam takes approximately 60 minutes across four sections — Vocabulary & Reading, Basic Safety, General Cleaning, and Following Instructions. There is no separate timer announced for each section, but you should pace at roughly 30–35 seconds per question.

Is the USPS Postal Exam 916 free?

Yes. USPS does not charge a fee for the 916 exam — it is a federal hiring assessment administered free of charge. There is no application fee, no testing-center fee, and retakes are also free after the standard waiting period.

What sections are on Postal Exam 916?

Postal Exam 916 has four sections — Vocabulary & Reading (custodial terms, labels, SDS), Basic Safety (PPE, lifting, chemicals, OSHA HazCom), General Cleaning (chemicals, mops, restroom sanitation, biohazards, dilution), and Following Instructions (route sheets, work orders, look-up tables).

Do I need cleaning experience to pass Postal Exam 916?

No. Postal Exam 916 tests basic literacy, common-sense safety, and standard cleaning knowledge that can be learned in a few hours of study. Prior custodial experience helps but is not required — focus on safety rules, PPE, never-mix chemicals, and how to read a label or SDS.

Can I retake the USPS Postal Exam 916?

Yes, but typically only after a 12-month waiting period from your previous attempt. You must reapply for an open custodial posting and be re-invited to the assessment. The exam itself remains free for retakes.