Which of the following substances gives the iodine test?

How many $-OH$ groups are present in each glucose unit of tri-nitro cellulose?

Which one of the following compounds contains $\beta-C_{1}-C_{4}$ glycosidic linkage?

On heating with conc. $H_2SO_4$,sucrose gives

Identify the correct conversion during acidic hydrolysis from the following $:$
$(A)$ Starch gives galactose.
$(B)$ Cane sugar gives an equal amount of glucose and fructose.
$(C)$ Milk sugar gives glucose and galactose.
$(D)$ Amylopectin gives glucose and fructose.
$(E)$ Amylose gives only glucose.
Choose the correct answer from the options given below $:$

Which of the following molecules serves as fibrous content of food only and is useful for bowel movement in humans?