Among the three compounds shown below,two yield the same product on reaction with warm $HNO_3$. The exception is:

Write two main functions of carbohydrates in plants.

Which of the following pairs of carbohydrates produce an equal quantity of glucose on hydrolysis per mole?

Which among the following carbohydrate molecules yields the highest number of galactose molecules when one mole of each is hydrolyzed?

Compound $A$,$C_5H_{10}O_5$,gives a tetraacetate with $Ac_2O$ and oxidation of $A$ with $Br_2-H_2O$ gives an acid,$C_5H_{10}O_6$. Reduction of $A$ with $HI$ gives isopentane. The possible structure of $A$ is:

What are the two structures of $D$-glucopyranose obtained from $D$-glucose called?