Free API API-936 Exam Questions

Become API Certified with updated API-936 exam questions and correct answers

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Total 185 Questions | Updated On: Oct 27, 2026

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Question 1

When is metal fiber reinforcement used in castable refractory?

A : Only when extra strength is required

B : Only when added in the field

C : For all monolithic hot face castable refractory materials

D : Only when specified by the owner

Answer: D

Question 2

Which of the following conditions must be met for test results from trial mixes of low cement castables to be accepted for qualification?

A : The water content must not vary more than ±1.0% from that recommended by the manufacturer.

B : Specimens must be fired at 1500°F (815°C) and held for a minimum of 3 hours.

C : Bulk density and CCS must exceed average values published in ASTM C401.

D : The drying process must be conducted at 220°F (104°C) for at least 48 hours before firing.

Answer: A

Question 3

Cristobalite is an important constituent of

A : umina bricks

B : lica brick

C : gnesia brick

D : ulating brick

Answer: B

Question 4

For the qualification of the applicator/installer, they shall demonstrate their ability to install the refractory:

A : to meet the specified quality standards utilized for the installation of work.

B : by using the technique prescribed by the manufacturer no matter which material is used.

C : free of visible voids, laminations on the hot face or working surface only for gunned lining.

D : free of visible voids, laminations on the hot face or working surface only of the refractory lining.

Answer: A

Question 5

How many specimens per sample are required for testing by ASTM C-704?

A : One

B : Two

C : Three

D : Four

Answer: B

Page: 1 / 37

Total 185 Questions | Updated On: Oct 27, 2026

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