2004
Chemistry
67ca00ce0c643c71d77dee1f
Oxyacetylene flame is used for iron-welding because it
A.
makes the iron metal solidity very quickly
B.
Combines with oxygen to give a pop sound
C.
Evolves a lot of heat when burnt
D.
Dissociates to produce carbon (IV) oxide and oxygen
Correct Answer: Evolves a lot of heat when burnt
Explanation
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