What is the use of such an increase in surface area of food ?

Alveoli increase surface area by-

Assertion :Rate of evaporation increases with an increase in the surface area of the vessel Reason : Evaporation is a surface phenomenon

(A): Rate of evaporation increases with an increase in the surface area of the vessel (R): Evaporation is a surface phenomenon The correct answer is

When work is done to pull the surface of a soap film to increase its surface area, do you think its surface tension also increases?

Rate of evaporisation increases with increase in 3 surface area, but not vapour pressure. Why?

The volume of a sphere is increasing at the rate of 1200 c.cm/sec. The rate of increase in its surface area when the radius is 10 cm is

Name the finger like projection which increase the surface area of absorption in small intestine.