456.Zollinger Ellison syndrome is characterized by

a.Hypoglycemia

b.Recurrent peptic ulcerations

c.Diarrhoea

d.Intestinal obstruction

Ans-b.Recurrent peptic ulcerations

455.Recommended etching time for primary teeth

a.15-30 seconds

b.30-60 seconds

c.60-90 seconds

d.90-120 seconds

Ans-60 -90 seconds

454.The mineral that is critical in the transformation of plaque into sulcus

a.Calcium

b.Phosphate

c.Potassium

d.Sodium

Ans-Phosphate