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In the flash point test, first, the test cup is filled with a portion of the...

In the flash point test, first, the test cup is filled with a portion of the asphalt. Then, the temperature of this chemical is increased rapidly and then at a slow, constant rate. Explain why?

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Answer #1

When we are increasing the temperature of chemical rapidly then it will help to produce flammable vapourin increasing quantity and density so that it can flame for atleast five second.

Hence we say rapid increasing test is just for the starting the formation of flammable vapour and once the formation of vapour is started, temperature is decreases at slow rate because we want to note that temperature at which flame will be remains atleast for five second.

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