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In modern proces, while phosphorus is ma...

In modern proces, while phosphorus is manufacured by :

A

heating a mixture of phosphorus mineral with sand and coke in an electric furnace

B

heating calcium phosphours with lime

C

heating bone ash with coke

D

heating phosphate mienral with sand.

Text Solution

Verified by Experts

The correct Answer is:
A
White phophorus is obtained by heating a mixture of phosphorus mineral, `Ca_(3)(PO_(4))_(2)` with sand and coke in an electric furnace.
`2Ca_(3)(PO_(4))_(2)("from bone-ash" )+10C+6SiO_(2)overset(Delta)to6CaSiO+10CO+P_(4)(s)`
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Asseration: White phosphorus is less stable whereas red phosphorus is more stable. Reason: White phosphorus exists as individual P_(4) having more strained geometry while red phosphorus has P_(4) tetrahedron structure linked together.

RESONANCE-P BLOCK ELEMENTS-ALP PART 1 OBJECTIVE
  1. Which oxide does not act as a reducing agent?

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  2. Action of concentrated nitric not act as a reducing agent ?

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  3. In modern proces, while phosphorus is manufacured by :

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  4. With reference to protonic acids, which of the following statements is...

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  5. The true statement of the acids of phosphorus H(3)PO(2),H(3)PO(3) and ...

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  6. White phosphorus when boiled with strong solution of caustic soda prd...

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  7. Oxygen can be obtained from bleaching powder by:

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  8. Which compound does not give oxygen on heating?

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  9. Acidified potassium permanganate is dropped over sodium peroxide taken...

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  10. Which pair of species are referred to as suboxides respectively?

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  11. Which of the following statements is not true about ozone ?

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  12. Ozone is prepared by passing silent electric discharge through oxygen....

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  13. Which of the following is responsible strach-iodide paper blue when it...

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  14. Which one of the following property is not correct for ozone?

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  15. Ozone give carbonyl compounds with :

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  16. Moist iodine reacts with ozone to form.

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  17. Which ion cannot be oxidizes by ozone?

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  18. Which of the following solutions does not change its colour on passing...

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  19. A green coloured solution of a salt changes its colour to light pink o...

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  20. Mercury loses its meniscus on passing ozone through it. The menicus ca...

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