Advertisements
Advertisements
प्रश्न
The conversion of a solid into vapours without passing through the liquid state is called :
विकल्प
vaporisation
fusion
sublimation
freezing
उत्तर
sublimation
The transformation of a solid directly into vapour, on heating, is known as sublimation.
APPEARS IN
संबंधित प्रश्न
For any substance, why does the temperature remain constant during the change of state?
Tick the most appropriate answer.
Chemical changes involve
Which contains more heat, 1 kg of ice of 0° C or 1 kg of water at 0° C ? Give reason for your answer.
When water at 0°C freezes to form ice at the same temperature of 0°C, then it :
A kind of matter which can sublime is
With the help of a simple diagram how would you show that – solids expand on heating
Fill in the blanks with the correct word/s from the bracket.
Ice on absorption of heat converts to ‘X’ a process called ____ [vaporization / melting]. ‘X’ changes to water vapour on ____ [heating / cooling]. Water vapour changes back to ‘X’ on ____ [freezing / condensation]. The constant temperature at which ice changes into ‘X’ is called its ____ [fusion point / melting point / boiling point].
Photosynthesis is a natural process by which green plants manufacture food in the presence of sunlight.
Are any new products formed during the above process.
Fill in the blank with the correct word of the statement given below:
Sublimation is _______ a change of state of matter.
Complete the blank with reference to interconversion of matter on the basis of kinetic theory-with the word ‘increase’, ‘decreases’, ‘gain’, ‘lose’, or ‘overcome’ in the following case.
During vaporization, the liquid particles ____________ energy.
