Question

Define the following:-
a) Sublimation
b) Velocity
c) Plasmolysis
d) Retardation
e) Latent heat of vaporisation ​

Answer 1

1. When anything solid turns into a gas without first becoming liquid, that's sublimation. When the surface layer of snow or ice turns into fog or steam without melting, this is an example of sublimation 2. the speed at which something moves in a particular direction 3. contraction of the protoplast of a plant cell as a result of loss of water from the cell. 4. Retardation is the act or result of delaying; the extent to which anything is retarded or delayed; that which retards or delays. 5. The amount heat required to convert unit mass of liquid into its vapour state without change in its temperature called is latent heat of vaporization

Answer 2

Answer:

Sublimation:-

Sublimation is a type of phase transition, or a change in a state of matter, just like melting, freezing, and evaporation. Through sublimation, a substance changes from a solid to a gas without ever passing through a liquid phase. Dry ice, solid CO2, provides a common example of sublimation.

Velocity:-

Velocity is a measure of how fast something moves in a particular direction. In other words, a velocity is a speed with a direction. For instance, if an object moves east at 9 metres per second (9m/s), we would say that its velocity is 9 m/s to the east.

Plasmolysis:-

Plasmolysis is when plant cells lose water after being placed in a solution that has a higher concentration of solutes than the cell does. This is known as a hypertonic solution. Water flows out of the cells and into the surrounding fluid due to osmosis.

Retardation:-

Retardation is the act or result of delaying; the extent to which anything is retarded or delayed; that which retards or delays.

Latent heat of vaporisation:-

Latent heat of vaporization is a physical property of a substance. ... When a material in liquid state is given energy, it changes its phase from liquid to vapor; the energy absorbed in this process is called heat of vaporization. The heat of vaporization of water is about 2,260 kJ/kg, which is equal to 40.8 kJ/mol.

Hope My Answer Helps!