1)When heated in air, coal burnsand produces mainly ________gas.
a)Oxygen b)Carbondioxide c)Nitrogen d)Hydrogen
Answers
Answered by
3
Answer:
b
Explanation:
bcoz it is made up of dead and decomposed plants and animals minerals
Answered by
6
Answer:
B)carbondioxide
Explanation:
When ever anything is burned carbundioxide is realised
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