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The deficiency of which of the following leads to dental caries ?

  • Iron
  • Fluorine
  • Copper
  • Zinc

Answer: Option B

Similar Questions :

1. Herbicides are used to control ?

  • Fungi
  • Nematodes
  • Weeds
  • Insects

Answer: Option C

2. The most abundant constituent of atmospheric air is ?

  • Oxygen
  • Hydrogen
  • Carbon
  • Nitrogen

Answer: Option D

3. Placenta is the structure formed :

  • by fusion of germ layers
  • by foetus only
  • by the union of foetal and uterine tissue
  • by uterine only

Answer: Option C

4. Mango contains which vitamins ?

  • A and C
  • B and C
  • A and B
  • B and E

Answer: Option A

5. Name of the first successfully cloned deer ?

  • Drewn
  • Dewey
  • Drarar
  • Delor

Answer: Option B

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