Single Answer MCQ
Q-00040017
During the combustion of which of the following would you expect to see a blue flame?
1
Candle wax
2
Kerosene
3
Propane
4
Naphthalene
Answer and Solution
Answer
C. Propane
Solution:
A blue flame indicates complete combustion with sufficient oxygen, which is typical of cleaner-burning fuels like propane. In contrast, candle wax and naphthalene produce yellow, sooty flames due to incomplete combustion.
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