EASY
Earn 100

Water does not always boil at 100°C. Why is this so?

Important Questions on Heat and Temperature

MEDIUM
If a gas expands at constant temperature it indicates that
EASY
Physical state of water at 0°C is
EASY
The melting point of ice is _____.
HARD
Which one has the lower boiling point component among methyl alcohol and water?
MEDIUM
While determining the boiling point of water in the laboratory, the beaker containing hot water accidentally fell on the hand of a student. A fellow student immediately put cold water on his hand and then placed ice cubes on his hand. He then took the student to the school dispensary for giving him first aid.
a. Define boiling point.
b. Why does temperature remain constant during boiling?
c. How does boiling differ from evaporation?
d. State the values displayed by the fellow student.
 
EASY
The temperature at which a liquid changes into vapour at the atmospheric pressure is called its _____.
MEDIUM
Naphthalene boils at 400°C.
EASY
Define the following: Boiling Point.
MEDIUM
Boiling point of a substance -
EASY
What do you mean by boiling and boiling point?
EASY
We can often see people adding salt to water while boiling stuff like kidney beans or potatoes. Why?
HARD
The intermolecular attractive forces in alcohol are stronger than those in water.
EASY
The temperature at which liquid changes into vapour is it's _____.
EASY

Define the melting point and boiling point.

MEDIUM
Define the term boiling.
MEDIUM
The temperature at which a liquid changes into gas is known as
MEDIUM
Boiling point of 10% aqueous solution of common salt at atmospheric pressure is -
MEDIUM
While determining the boiling point of water in the laboratory, the beaker containing hot water accidentally fell on the hand of a student. A fellow student immediately put cold water on his hand and then placed ice cubes on his hand. He then took the student to the school dispensary for giving him first aid.
A. Define boiling point.
B. Why does temperature remain constant during boiling?
C. How does boiling differ from evaporation?
D. State the values displayed by the fellow student.