If the flame of a miner’s safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains_______________?
(A) Hydrogen sulphide
(B) Carbon dioxide
(C) Methane
(D) Oxygen
If the flame of a miner’s safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains_______________?
| Share this... |
 Facebook
|
 Twitter
|
 Linkedin
|
 Whatsapp
|
Related Mcqs
- Previous:The coagulant which is generally not used for treating the sewage, is__________________?
- Next:The Chezy’s constant C in the formula V = C_________________?
Leave a Reply
Your email address will not be published. Required fields are marked *
