Home
Class 12
CHEMISTRY
White enamel of our teeth is...

White enamel of our teeth is

A

`Ca_3 (PO_4)_2`

B

`CaF_2`

C

`CaCl_2`

D

`CaBr_2`

Text Solution

Verified by Experts

The correct Answer is:
B
The enamel of our teeth is the hardest substance in the body made up of `CaF_(2)` and dentine below it made of `Ca_(3)(PO_(4))_(2)`.
Promotional Banner

Topper's Solved these Questions

  • THE P -BLOCK ELEMENTS (NITROGEN, OXYGEN, HALOGEN AND NOBLE FAMILY)

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Noble Gases)|22 Videos

  • THE P -BLOCK ELEMENTS (NITROGEN, OXYGEN, HALOGEN AND NOBLE FAMILY)

    ERRORLESS|Exercise PAST YEARS QUESTIONS|60 Videos

  • THE P -BLOCK ELEMENTS (NITROGEN, OXYGEN, HALOGEN AND NOBLE FAMILY)

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Oxygen Family)|50 Videos

  • THE d-AND f- BLOCK ELEMENTS

    ERRORLESS|Exercise Assertion and Reason |11 Videos

Similar Questions

Explore conceptually related problems

The enamel of the teeth is made of a compound 'X'. It is the hardest substance of the body. It does not dissolve in water but gets corroded when the pH of mouth is lowered below 5.5 (a) Identify the compound 'X' (b) How does it undergo damage due to eating sweets? What should we do to prevent tooth decay?

Layer of cells that secrete enamel of tooth is

Which substance constitutes the enamel coating of our teeth ?

Assertion (A): magnesium is not present in enamel of human teeth. Reason (R ): Magnesium is an essential elements for biological functions of human beings.

The enamel part of tooth is secreted by

Assertion: The deficiency of fluoride in drinking water cause disease such as tooth decay etc. Reason: The F^(-) ions make the enamel on teeth much harder by converting hydroxyapatite, the enamal on the surface of the teeth, into much harder fluorapatite.

ERRORLESS-THE P -BLOCK ELEMENTS (NITROGEN, OXYGEN, HALOGEN AND NOBLE FAMILY)-NCERT BASED QUESTIONS (Halogen Family)
  1. Which one of the following orders is not in according with the propert...

    Text Solution

    |

  2. The correct order of pseudohalide , polyhalide and interhalogen are : ...

    Text Solution

    |

  3. White enamel of our teeth is

    Text Solution

    |

  4. The reaction of the type 2X2 + S to SX4 is shown by sulphur when X is

    Text Solution

    |

  5. Least volatile hydrogen halide is

    Text Solution

    |

  6. Which halogen forms an oxoacids that contains the halogen atom in tri...

    Text Solution

    |

  7. A black compound of manganese reacts with a halogen acid to give green...

    Text Solution

    |

  8. Which of the following halogen oxides is ionic?

    Text Solution

    |

  9. Which of the following is not prepared by electrolytic method

    Text Solution

    |

  10. The more activeness of fluorine is due to

    Text Solution

    |

  11. Fluorine is a stronger oxidising agent than chlorine in aqueous soluti...

    Text Solution

    |

  12. With cold and dilute sodium hydroxide fluorine reacts to give

    Text Solution

    |

  13. The alkali metal halides are soluble in water but LiF is insoluble bec...

    Text Solution

    |

  14. Which of the following molecule is theoretically not possible ?

    Text Solution

    |

  15. HBr and HI can reduce sulphurie acid, HCI can reduced KMnO(4) and HF c...

    Text Solution

    |

  16. When fluoride is heated with conc. H2 SO4 and MnO2 the gas evolved is

    Text Solution

    |

  17. To purify fluorine gas, fumes of HF are removed by

    Text Solution

    |

  18. The property which is not true about fluorine is

    Text Solution

    |

  19. Which of the following is most easily hydrolysed amongst the following

    Text Solution

    |

  20. Chlorine cannot be used

    Text Solution

    |