Seliwanoff test and Xanthoproteic test are used for the identification of $....$ and $....$ respectively.

The ultimate products of oxidation of most of hydrogen and carbon in food stuffs are

Identify the source of linen from the following:

Yeast cells derive their energy from glucose by

Which of the following statement$(s)$ is(are) true?
$(1)$ Oxidation of glucose with bromine water gives gluconic acid.
$(2)$ The two six-membered cyclic hemiacetal forms of $D-(+)-$glucose are called anomers.
$(3)$ Hydrolysis of sucrose gives dextrorotatory glucose and laevorotatory fructose.
$(4)$ Monosaccharides cannot be hydrolysed to give polyhydroxy aldehydes and ketones.

Which biological molecule in living organisms contains $Mg$ as an essential component?