Advertisements
Advertisements
प्रश्न
Define 'boiling point' of a substance ? What is the boiling point of water ?
उत्तर
Boiling point: the boiling point of a substance is defined as the temperature at which liquid boils and changes rapidly into a gas at atmospheric pressure. The boiling point of water is 100°C.
APPEARS IN
संबंधित प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
When we add water to the following substances, which one will show a chemical change?
Dissolving salt in water is a reversible change.
Explain why, steam at 100° C is better for heating purposes than boiling water at 100° C.
When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation :
Define the following terms: Boiling point
Define the following terms: Liquefaction
Differentiate between: Melting and boiling
Give reasons:
How is interconversion of states of matter different from chemical reaction?
Name the phenomenon which causes the following changes:
Disappearance of camphor when exposed to air
In the paragraph below, write ‘solid’, ‘liquid’ or ‘gas’ in each of the brackets depending on the substance referred to just before.
On a bright sunny day, Riya and Gargi are playing with a ball ( ) in the park. Gargi feels thirsty. So, Riya brings tender coconut water ( ) for her. At the same time, a strong breeze ( ) starts blowing and it also begins to rain ( ). They run back into the house ( ), change their clothes ( ), and then their mother gives them a cup ( ) of hot milk ( ) to drink.