Home
Class 11
CHEMISTRY
(A): Concentration of soluble F^(-) ions...

(A): Concentration of soluble `F^(-)` ions in drinking water about 1 ppm is essential.
(R) Enamel on teeth is made much harder by converting hydroxyapatile `3Ca_(3)(PO_4)_2Ca(OH)_2` into `3Ca_(3)(PO_4)_2 CaF_2`

A

Both (A) and (R) are true and (R) is the correct explanation'of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

(A) is false but (R) is true

Text Solution

Verified by Experts

The correct Answer is:
B
Both (A) and (R) are true and (R) is not the correct explanation of (A)
Promotional Banner

Topper's Solved these Questions

  • ENVIRONMENTAL CHEMISTRY

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (PRACTICE SHEET)|30 Videos

  • ENVIRONMENTAL CHEMISTRY

    AAKASH SERIES|Exercise LEVEL - I (EXERCISE -I) (Definition of terms , Introduction , Environmental segments - Air pollution , Water pollution)|123 Videos

  • ENVIRONMENTAL CHEMISTRY

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LECTURE SHEET)|27 Videos

  • ELEMENTS OF CARBON FAMILY

    AAKASH SERIES|Exercise OBJECTIVE EXERCISE - 3 (Recent AIPMT/NEET Questions) |10 Videos

  • GENERAL ORGANIC CHEMISTRY

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|35 Videos

Similar Questions

Explore conceptually related problems

Ca_(3)(PO_(4))_(2) is

The concentration of fluroide ions in drinking water upto 1 ppm make the enamel on teeth much harder by converting ul(x) into fluorapatite. What is ul(x) ?

The reagent(s) used for softening the temporary hardness of water are a) Ca_3(PO_4)_2 b) Ca(OH)_2 c) Na_2CO_3 d) NaOCl

Complete the following reactions. "Ca"_(3)P_(2)+H_(2)O to

What volume of 1N NaOH solution can completely convert a solution containing 12g of NaH_(2)PO_(4) to Na_(3)PO_(4) ?

How many of the following species have reducing properties ? NH_(3),PH_(3),H_(3)PO_2,H_(3)PO_3,H_(3)PO_(4),LiA//H_(4),BH_3

Out of given chemicals, number of chemicals which is/are related to Solvay process : NH_(3), KCI, CO_(2), SO_(2), Ca(OH)_(2), NaCl, H_(1)SO_(4) , NaNO_(3)

Dry Distillation of (CH_(3)COO)_(2)Ca gives

Based on the structures how is the reduction ability of H_(3)PO_(2) or H_(3)PO_(3) accounted for?