The gas that usually causes explosions in coal mines is
1 Hydrogen
2 Carbon monoxide
3 Air
4 Methane
Answer Posted / rajesh
ch4
| Is This Answer Correct ? | 3 Yes | 2 No |
Post New Answer View All Answers
Where did the largest reflector telescope situated?
Names of some plants and trees that sleep during the day
What are reflecting nebulae?
Who discovered radio telescope?
How long can arihant stay underwater?
Why is ice wrapped in gunny sacks to prevent it from melting
name all the density all cloth,metals,materials?
Terls was dedicated to u.n as an international institution?
what is composition of fizzy drinks
Which is the first atomic submarine of india?
Arihant was commissioned on which day?
Which is the largest refractor telescope?
The country helped in arihant’s built?
Who developed primary blue print programme?
Why we use nhexane inplace of hexane in mobilepase preparation