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You are provided with three watch glasses containing milk, petrol

and mustard oil, respectively. Suppose you bring a burning candle
near these materials one by one, which material(s) will catch fire
instantly and why?

Science - Exemplar Problems

Chapter 6. Combustion and Flame


Petrol will catch fire instantly because of ignition temperature .Petrol have low ignition temperature so it will not take time to catch fire but mustard oil and milk have high temperature so it will take time to catch fire

 if the ignition temperature is low then it burns quickly but if the temperature is high then it takes time to burn

Hope it helps you.........plz mark it as the best.....&comment
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The petrol will catch fire instantly.Petrol has low ignition temperation and high calorific value as compared to milk and mustard oil.
Therefore, out of these given three liquids, petrol will burn instantly producing a large amount of heat as well as light.

hope it helps...plzzzzzz mark it as brainliest....if it helps...thank u.

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