Question

Harman asked Shikha that which substance catch fire in presence of air at room temperature? *​

Answer 1

Sodium

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Answer 2

White phosphorus

Explanation:

• Spontaneous combustion is when a substance catches fire as soon as it reaches its ignition temperature.
• White phosphorus catches fire at room temperature of 35°C.
• White phosphorus burns in the presence of air and gives bright light and smoke, thus it is a substance which glows in presence of oxygen at room temperature.