Combustion of a candle is
A. physical change
B. reduction reaction
C. endothermic reaction
D. exothermic reaction
Answer: Option A
This Question Belongs to Chemistry GK Chapter Wise >> Thermochemistry
Join The Discussion
Comments (2)
Related Questions on Thermochemistry
A. physical change
B. reduction reaction
C. endothermic reaction
D. exothermic reaction
Which law of the thermochemistry introduces the concept of entropy?
A. Second Law
B. Zeroth Law
C. Third Law
D. First Law
Which of the following is a closed system?
A. Jet engine
B. Tea placed in steel kettle
C. Pressure cooker
D. Rocket engine during propulsion
The entropy of perfectly crystalline solid at absolute zero is
A. positive
B. negative
C. Zero
D. not definite
If combustion means burning in presence of oxygen this is hell in no way a physical change.it is better an exothermic reaction
The answer should be exothermic reaction, because combustion of a candle(wax) is a reaction between hydrocarbons and oxygen which yelds carbon dioxide, water and heat. Also there physical change occurs, wax melts by the heat produces in the reaction which is a physical change.