Assertion : In a pressure cooker,water is bro | vedclass

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(C) The water starts boiling a second time because when the pressure cooker cools down,the pressure inside decreases.According to the relationship bet

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If the Assertion is correct but Reason is incorrect.

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(C) The water starts boiling a second time because when the pressure cooker cools down,the pressure inside decreases.According to the relationship between pressure and boiling point,a decrease in pressure leads to a decrease in the boiling point $(B.P.)$ of water.When the lid is removed,the pressure drops to atmospheric pressure,which is lower than the pressure inside the closed cooker.Since the water is already at a high temperature,this reduction in pressure causes the water to boil again.The Reason provided is incorrect because impurities generally increase the boiling point of water (elevation of boiling point),not decrease it.

$Assertion :$ In a pressure cooker,water is brought to a boil. The cooker is then removed from the stove. Now,upon removing the lid of the pressure cooker,the water starts boiling again.
$Reason :$ The impurities in water bring down its boiling point.

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$Assertion :$ In a pressure cooker,water is brought to a boil. The cooker is then removed from the stove. Now,upon removing the lid of the pressure cooker,the water starts boiling again.$Reason :$ The impurities in water bring down its boiling point.