Give reasons for the following:
Q. Give reasons for the following:
(i) A liquid generally flows easily.
(ii) Ice at 0°C appears colder to the mouth than water at 0°C. Why?
(iii) Doctors advise to put strips of wet cloth on the forehead of a person having high temperature.
Ans.
(i) Its molecules are able to slide over one another due to slightly weaker intermolecular forces of attraction.
(ii) It is due to high latent heat of ice. Ice absorbs this heat energy from the mouth. Hence, appears much colder than water at 0°C.
(iii) Water while evaporating takes away the necessary heat from the body of the patient and thus lowers the temperature of his body.
Follow on Facebook page – Click Here
Google News join in – Click Here
Read More Asia News – Click Here
Read More Sports News – Click Here
Read More Crypto News – Click Here