__________ is the process by which a solute gets dissolved in a solvent.
Dissolution
Evoporation
Boiling
None of these
The formation of brown powdery material on the surface of iron in the presence of moisture is called _________.
Rusting
Melting
Periodic change may be used for measuring __________.
Time intervals
Fixed intervals
Prolonged intervals
Occurrence of earth quaker is a __________ change.
Non periodic
Periodic
Slow
_________ is the process in which vapour of a liquid on cooling get converted into the liquid at some fixed temperature.
Condensation
Evaporation
The changes which repeat themselves at regular intervals of time are called __________ changes.
Fast
Burning of fuel is a _________ change but burning of a house is ___________ .
Desirable,undesirable
undesirable, Slow
Both A$B
Sublimation is a ___________ change.
Physical
Chemical
Desirable
Some changes are __________ at one time but _________ at another time.
Desirable,Undesirable
Man made, desirable
Slow, undesirable
___________ is the conversion of a liquid into its vapour state at any temperature below its boiling point.
