Question

The boiling point of a liquid X is 20°C more than that of water. Boiling point of X is (1) 353 K (2) 373 K (3) 393 K (4) 120 K

Answer 1

Its 393 K because

boiling point of water is 100 degree Celsius.

Now add 20 Celsius.

Answer is 120 degree.

Now to Celsius into Fahrenheit we add 273 K

so 120 + 273 gives 393 K

Answer 2

Answer:- (3) 393 K

Solution:- Boiling point is the temperature at which vapor pressure equals to atmospheric pressure. In simple words, it is the temperature at which a liquid boil and changes to vapor. Water boils at 100 degree C and so it's boiling point is 100 degree C.

The boiling point of liquid X is 20 degree C more than that of water. So, the boiling point of liquid X = 100+20 = 120 degree C

To convert degree C to kelvin, we add 273.

So, boiling point of liquid X = 120+273=393K

Hence, choice (3) 393K is correct.