Answer
Verified
408.6k+ views
Hint: The temperature at which the vapour pressure of a liquid is equal to the atmospheric pressure is called boiling point. It is surrounding dependent.
Complete step by step answer:
The boiling point of a liquid is the temperature at which the vapor pressure of the liquid equals the pressure of the atmosphere (atmospheric pressure) and the liquid changes into a vapour.
The boiling point of a liquid varies depending upon the surrounding environmental pressure. A liquid at high pressure has a higher boiling point than the same liquid at atmospheric pressure. A liquid in vacuum has a lower boiling point than when that liquid is at atmospheric pressure.
At sea level, the boiling point of water is 100°C. At some higher altitude, the boiling point of water decreases.
The normal boiling point (also called the atmospheric boiling point) of a liquid is different from the boiling point of a liquid. The normal boiling point is defined as the temperature at which the vapour pressure of the liquid is equal to the defined atmospheric pressure at sea level, i.e. one atmosphere. On the other hand, the standard boiling point has been defined by IUPAC since 1982 as the temperature at which boiling occurs under a pressure of one bar.
Hence, the correct answer is (B) 100°C
Note: Unless the temperature variation isn’t mentioned, a student must tell the normal boiling point of the liquid, i.e. at one atmosphere.
Complete step by step answer:
The boiling point of a liquid is the temperature at which the vapor pressure of the liquid equals the pressure of the atmosphere (atmospheric pressure) and the liquid changes into a vapour.
The boiling point of a liquid varies depending upon the surrounding environmental pressure. A liquid at high pressure has a higher boiling point than the same liquid at atmospheric pressure. A liquid in vacuum has a lower boiling point than when that liquid is at atmospheric pressure.
At sea level, the boiling point of water is 100°C. At some higher altitude, the boiling point of water decreases.
The normal boiling point (also called the atmospheric boiling point) of a liquid is different from the boiling point of a liquid. The normal boiling point is defined as the temperature at which the vapour pressure of the liquid is equal to the defined atmospheric pressure at sea level, i.e. one atmosphere. On the other hand, the standard boiling point has been defined by IUPAC since 1982 as the temperature at which boiling occurs under a pressure of one bar.
Hence, the correct answer is (B) 100°C
Note: Unless the temperature variation isn’t mentioned, a student must tell the normal boiling point of the liquid, i.e. at one atmosphere.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
The branch of science which deals with nature and natural class 10 physics CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
State the differences between manure and fertilize class 8 biology CBSE
Why are xylem and phloem called complex tissues aBoth class 11 biology CBSE
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Difference Between Plant Cell and Animal Cell
What would happen if plasma membrane ruptures or breaks class 11 biology CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
What precautions do you take while observing the nucleus class 11 biology CBSE
What would happen to the life of a cell if there was class 11 biology CBSE
Change the following sentences into negative and interrogative class 10 english CBSE