Cheilosis and digestive disorders are due to the deficiency of

Deficiency of which vitamin causes rickets?

Carrot and curd are sources for the vitamins respectively:

Which of the following vitamins is water-soluble?

Which of the following statements are correct?
$a$. Deficiency of vitamin $K$ results in increased blood clotting time.
$b$. The sources of vitamin $B_2$ are milk and liver.
$c$. Hexapeptide has six peptide bonds.
$d$. Improper functioning of adrenal cortex results in hypoglycemia.

Which of the following vitamins is helpful in delaying blood clotting?