Question

When we burn a candle, which of the following change takes place?

• A. Physical Change
• B. Chemical Change
• C. Reversible change
• D. None of these

Answer 1

Answer: (A), (B)

The correct options are
A Physical Change
B Chemical Change

Both Physical and Chemical changes occur.
Upon heating, the wax first undergoes the process of melting followed by burning. Here, melting is a physical change as the melted wax can again be obtained as solid wax upon the removal of heat, whereas, burning is a chemical change, as once the wax has been burnt, it cannot be obtained back in its original form.