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Suraksha
Pathshala
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CRM-III · SAFETY QUIZ
Gas & Hydrogen Safety
Select a level and answer each question. You can revisit answers before submitting.
13 published questions
All
13
Foundation
7
Practical
3
Advanced
3
0 / 3 answered
Choose the best answer
QUESTION 01 / 3
Advanced
Why must a hydrogen system be checked for leaks using an approved method?
A
Hydrogen can form flammable mixtures with air
B
Hydrogen always has a strong warning smell
C
Hydrogen cannot escape small joints
D
Hydrogen is heavier than every other gas
QUESTION 02 / 3
Advanced
Which statement about hydrogen–nitrogen mixed gas is technically correct?
A
Any addition of nitrogen guarantees the mixture is nonflammable
B
Mixed-gas safety depends only on the pipeline pressure
C
Nitrogen makes atmospheric monitoring unnecessary
D
Flammability depends on composition and conditions, including possible air ingress
QUESTION 03 / 3
Advanced
A maintenance team proposes welding near a galvanizing furnace gas line. Which planning principle is essential?
A
Assume the line is safe when the burner is off
B
Rely only on an extinguisher near the work
C
Apply the authorized isolation, gas-safety checks and hot-work permit procedure
D
Open a nearby gas valve to improve ventilation
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