(A) presence of ozone detected by odour
(B) hissing sound
(C) faint luminous glow of bluish colour
(D) all of the above
(A) presence of ozone detected by odour
(B) hissing sound
(C) faint luminous glow of bluish colour
(D) all of the above
| Share this... |
Facebook
|
Twitter
|
Linkedin
|
Whatsapp
|
Your email address will not be published. Required fields are marked *