Which of the following is the richest energy compound?

What is the color produced when starch reacts with $I_2$?

Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch $(1-5)$ make it useful as a storage material?
$(1)$ Easily translocated
$(2)$ Chemically non-reactive
$(3)$ Easily digested by animals
$(4)$ Osmotically inactive
$(5)$ Synthesized during photosynthesis
The useful properties are:

Which sugar does not give the Benedict's test?

What is obtained from the hydrolysis of a sucrose molecule?

What are gums made of? Is Fevicol different?