HV Exit Exam • Set 6 Question 14 of 30
Which of the following is a physical and chemical characteristic of pure SF6 gas?
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Direct Answer
Option D: It is colourless, odourless, non-toxic, and non-flammable
Pure SF6 is non-toxic, non-flammable, colorless, and odorless. However, toxic decomposition byproducts (e.g., SF4, SOF2) can form during intense electrical arcing.
All Options
A
It is yellow in color
B
It possesses a pungent chlorine-like odor
C
It is highly combustible
D
It is colourless, odourless, non-toxic, and non-flammable
(Correct Answer)
Detailed Explanation & Context
Pure SF6 is non-toxic, non-flammable, colorless, and odorless. However, toxic decomposition byproducts (e.g., SF4, SOF2) can form during intense electrical arcing.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).
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