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Bone glow in the dark. This is due to...

Bone glow in the dark. This is due to

A

the presence of red phosphorus

B

conversion of white phosphorus into red phoshporus

C

the presence of calcium carbonate

D

the presence of calcium phosphate

Text Solution

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The correct Answer is:
D
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RESONANCE-NITROGEN & OXYGEN FAMILY-Part-II National Standard Examination in chemistry
  1. The anhydride of nitric acid is

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  2. The geometry of ammonia molecule can be best described as

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  3. Bone glow in the dark. This is due to

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  4. Inert pair effect plays an important role in the case of

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  5. In the presence of an anthraquinone derivatives as a catalyst, the aqu...

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  6. In the above reaction (in Q.99) Na(2)S(2)O(4) acts as a

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  7. The ozone hole in the upper atmosphere of the earth is due to the brea...

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  8. The electron -pair geometry of the central oxygen atom of ozone is

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  9. P(4)(s) + 3OH^(-) (aq) + 3H(2)O (I) rarr PH(3) (g) + 3H(2)PO(2)^(-) (a...

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  10. The compound which can act as an oxidizing agent as well as reducing a...

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  11. When an inert atmosphere is required in metallurgical operation nitrog...

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  12. The nitrogen compound formed when CaCN(2) reacts with steam or hot wat...

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  13. The element that has the highest tendency to catenate is

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  14. The chemical formula of 'laughing gas' is

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  15. Phosphine is prepared by the action of

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  16. The reddish -brown gas formed when nitric oxide is oxidized by air is

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  17. Which of the following salt/s of H(3)PO(3) exists ? (I)) NaH(2)PO(3)...

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  18. Acidity of diprotic acids in aqueous solutions increases in the order

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  19. Upon long standing concetrated HNO(3)

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  20. The reaction that doses not produce nitrogen is :

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