If the flame of a miner's safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains?

Hydrogen sulphide
Carbon dioxide
Methane
Oxygen

LohaHridoy

8 views

2025-01-04 04:42

1 Answers

AhmedNazir

Answer: Option 3

8 views Answered 2022-09-01 13:21

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