Anti-scorbutic vitamin is also known as

Which of the following is essential for living systems?

Which of the following is a chain-growth polymer?

Match the following:

Column $I$	Column $II$
$(a)$ Aquaporin	$(i)$ Amide
$(b)$ Asparagine	$(ii)$ Polysaccharide
$(c)$ Abscisic acid	$(iii)$ Polypeptide
$(d)$ Chitin	$(iv)$ Carotenoids

Select the correct option:

Identify the physical and chemical processes from the following:
$I - Ba(OH)_2 + H_2SO_4 \rightarrow BaSO_4 + 2H_2O$
$II -$ Ice $\rightarrow$ Water
$III -$ Water $\rightarrow$ Steam
$IV -$ Starch $\rightarrow$ Glucose
Which of these represent physical processes and chemical processes respectively?

Which carbohydrate is impermeable to the plasma membrane?