ExxonMobil Test ExxonMobil Sample 2 — Questions and Answers
Question 1: A pipeline carries 4,200 barrels of crude oil per hour. If a valve failure reduces flow by 35%, how many barrels are lost in a 6-hour shutdown?
- 8,820 (Correct answer)
- 9,450
- 7,350
- 10,080
Correct answer: 8,820
35% of 4,200 = 1,470 barrels/hr lost; 1,470 × 6 = 8,820 barrels.
Question 2: A refinery unit runs at 92% efficiency. If the theoretical output is 50,000 gallons per day, what is the actual output?
- 46,000 gallons (Correct answer)
- 45,000 gallons
- 48,000 gallons
- 47,500 gallons
Correct answer: 46,000 gallons
50,000 × 0.92 = 46,000 gallons.
Question 3: Which workplace behavior BEST reflects ExxonMobil's Operations Integrity Management System (OIMS) principles?
- Stopping work when an unsafe condition is identified (Correct answer)
- Completing tasks faster to meet production targets
- Skipping non-mandatory safety briefings when experienced
- Delegating safety checks to the newest team member
Correct answer: Stopping work when an unsafe condition is identified
OIMS empowers any employee to stop work immediately when safety is in question.
Question 4: A storage tank holds 120,000 liters. Fluid is pumped in at 800 L/min and pumped out at 550 L/min. How long (in hours) will it take to fill the tank from empty?
- 8 hours (Correct answer)
- 6 hours
- 10 hours
- 4 hours
Correct answer: 8 hours
Net fill rate = 800 − 550 = 250 L/min; 120,000 ÷ 250 = 480 min = 8 hours.
Question 5: In a verbal reasoning question, the passage states: 'All hydrocarbon processing units require scheduled maintenance.' Which conclusion is valid?
- Unit A, a hydrocarbon processing unit, requires scheduled maintenance. (Correct answer)
- All scheduled maintenance involves hydrocarbon units.
- Unit A requires maintenance only if it is offline.
- Maintenance schedules are optional for low-risk units.
Correct answer: Unit A, a hydrocarbon processing unit, requires scheduled maintenance.
The statement is universal, so any hydrocarbon processing unit, including Unit A, must require scheduled maintenance.
Question 6: A technician notices a pressure gauge reading 15% above the safe operating limit. What should be the FIRST action?
- Notify the supervisor and initiate shutdown procedures (Correct answer)
- Monitor the gauge for another 30 minutes before acting
- Reset the gauge manually and document the anomaly
- Increase throughput to stabilize pressure downstream
Correct answer: Notify the supervisor and initiate shutdown procedures
Exceeding safe operating limits requires immediate escalation and shutdown per standard process safety protocols.
Question 7: If crude oil costs $85 per barrel and a refinery processes 12,000 barrels per day, what is the daily raw material cost?
- $1,020,000 (Correct answer)
- $960,000
- $1,200,000
- $1,050,000
Correct answer: $1,020,000
85 × 12,000 = $1,020,000.
ExxonMobil Test ExxonMobil Sample 2
A pipeline carries 4,200 barrels of crude oil per hour.
If a valve failure reduces flow by 35%, how many barrels are lost in a 6-hour shutdown?