$(a)$ What is the nature of food coming from the stomach?
$(b)$ Mention any two structural modifications in the small intestine which help in the absorption of food.

(N/A) The food coming from the stomach is acidic in nature due to the presence of $HCl$.
$(b)$ $(i)$ The inner lining of the small intestine has numerous finger-like projections called villi,which significantly increase the surface area for the absorption of digested food.
$(ii)$ The small intestine is a long,highly coiled tube,which ensures that the food stays in the intestine for a longer duration,allowing for maximum absorption of nutrients.