Which one of the following is an example of chemical change?
Bose-Einstein Condensate (BEC) is formed by cooling a gas of extremely low density, about one-hundred-thousandth the density of normal air. This is treated as
A mixture of sulphur and carbon disulphide is
During summer, water kept in an earthen pot becomes cool because of the phenomenon of
Which one of the following sets of phenomena would increase on raising the temperature?