Chemistry · Chemical Reactions and Equations
Which of the following processes involves a chemical reaction?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Liquefaction of air
- 2Storing of oxygen gas under pressure in a gas cylinder
- 3Melting of ice to give water
- 4Heating copper wire in the presence of air at high temperature✓
Correct answer
Heating copper wire in the presence of air at high temperature
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