Vitamin $B_1$ (Thiamine) deficiency leads to:

What conditions arise due to the deficiency of Vitamin $A$?

Match the following nutrition/vitamin deficiencies in Column $I$ with causes/deficiencies in Column $II$ and choose the correct option from the answer key:

Column $I$	Column $II$
$(a)$ Kwashiorkor	$(p)$ Iron
$(b)$ Anaemia	$(q)$ Menadione
$(c)$ Dermatitis	$(r)$ Protein
$(d)$ Marasmus	$(s)$ Pyridoxine
$(e)$ Bleeding	$(t)$ Biotin

Kwashiorkor disease is due to

$A$ person who is a habitual drinker (alcoholic) is always deficient in which vitamin?

Deficiency of cyanocobalamine causes