Question

The ignition temperatures of four substances, P, Q, R, and S, are 125°C, 270°C, 155°C, and 310°Crespectively. Which of the following pairs of substances catches fire at 250°C?​

Answer 1

Answer:

P and R are your answer

Explanation:

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Answer 2

P and R will catch fire at 250°C.

• The temperature at which a substance catches fire and ignite is called its ignition temperature.
• The ignition temperatures of four substances, P, Q, R, and S, are 125°C, 270°C, 155°C, and 310°C respectively.
• Thus if we supply 250°C the substances P and R will catch fire as they will reach their ignition temperature and ignites.