Hydrocarbons Question 51
Question: Which of the following gases is used for welding [CPMT 1996]
Options:
A) Methane
B) Ethane
C) Acetylene
D) Ethene
Show Answer
Answer:
Correct Answer: C
Solution:
$ 2CH\equiv CH+5O_2\to 4CO_2+2H_2O\Delta H=-1300KJ $
The combustion of acetylene is highly exothermic and the heat produced during the combustion can be used for welding purposes in the form of oxy acetylene flame.
BETA
