Bleeding gums are caused by the deficiency of:

Long exposure to high doses of vitamin $D$ will cause:

The disease anaemia is caused by the deficiency of which of the following vitamins?

Kwashiorkor disease is caused by a deficiency of . . . . . . .

Which are not the essential constituents of a balanced diet?

Which of the following is the matching pair of the deficient nutrient and the resulting disease in which the patient develops swollen lips,thick pigmented skin of hands and legs,and irritability?