Pellagra is caused by the deficiency of

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(B) Niacin or nicotinamide (nicotinic acid) is also known as the anti-pellagra vitamin.Its deficiency causes pellagra,a condition characterized by sca

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Niacin

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(B) Niacin or nicotinamide (nicotinic acid) is also known as the anti-pellagra vitamin.Its deficiency causes pellagra,a condition characterized by scaly and pigmented skin.Deficiency of pyridoxine (Vitamin $B_{6}$) leads to anaemia,neuritic pain,convulsions,and skin lesions.Deficiency of folic acid causes megaloblastic or macrocytic anaemia.Deficiency of biotin (Vitamin $B_{7}$ or Vitamin $H$) causes dermatitis and anorexia.

Column-$I$	Column-$II$
$(1) -C-O-C-$	$(a)$ Phosphodiester bond
$(2) -C-O-O-C-$	$(b)$ Glycosidic bond
$(3) -C-NH-CO-$	$(c)$ Ester bond
$(4) -C-O-P-O-C-$	$(d)$ Peptide bond

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Column-$I$ Column-$II$

$(1) -C-O-C-$ $(a)$ Phosphodiester bond

$(2) -C-O-O-C-$ $(b)$ Glycosidic bond

$(3) -C-NH-CO-$ $(c)$ Ester bond

$(4) -C-O-P-O-C-$ $(d)$ Peptide bond

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