1.

(A) : In a pressure cooker, the water is brought to boil. The cooker is then removed from the stove. Now on removing the lid of pressure cooker, the water starts boiling again (R) : The impurities in water bring down its boiling point.

Answer»

If both (A) and (R) are correct and (R) is the correct EXPLANATION for (A)
If both (A) and (R) are correct but (R) is not correct explanation for (A)
If (A) is correct but (R) is incorrect
If (A) is incorrect but (R) is correct

Solution :In pressure cooker, water boils above `100^(@)C`. When the lid of cooker is OPENED, pressure is lowered so that boiling point DECREASES and water boils again.


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