Question

The table shows the ignition temperature of four substances. Which substance will catch fire easily when heated at 50°C?

Answer 1

Answer:

Ans B and D

Explanation:

Because there ignition temperature are the lowest and the question is till 50° celsius.

Answer 2

Substances B and D will catch fire easily when heated at 50 degrees celsius.

Explanation

IGNITION TEMPERATURE -

• The lowest temperature at which any flammable substance starts to combust.
• Substances start to burn at this temperature spontaneously at normal atmospheric conditions.
• When the temperature of the substance reaches higher than its ignition temperature, it will combust.
• In the given table, the ignition temperature of substances B and D are lower than the surrounding temperature.
• These substances will start to burn when the surrounding temperature rises higher than the ignition temperature of the respective substance.