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Holme's signals produce burning gases wh...

Holme's signals produce burning gases which serve as a signal to the approaching ships contains.

A

`CaC_(2)+CaCN_(2)`

B

`CaC_(2)+Ca_(3)P_(2)`

C

`CaC_(2)+CaCO_(3)`

D

`Ca_(3)P_(2)+CaCN_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
The spontaneous combination of phosphine is technically used in Holme's samples. Containers containing calcium carbide and calcium phosphide are pierced and thrown in the sea when the gases evolved burn and serve as a signal.
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RESONANCE-P BLOCK ELEMENTS-Exercise 2 part 2 OBJECTIVE
  1. White phosphorous may be removed from red phosphorus by :

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  2. Red phosphorus may be prepared from white phosphorus by :

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  3. Holme's signals produce burning gases which serve as a signal to the a...

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  4. Phosphorus trichloride, PCl(3) undergoes, hydrolysis at room temperatu...

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  5. Ortho phosphoric acid on heating above 300^(@)C gives :

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  6. 1 mol of H(3)PO(2), H(3)PO(3) and H(3)PO(4) will neutralise x mol NaOH...

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  7. The true statement for the acids of phosphorus. H(3)PO(2) H(3)PO(3) an...

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  8. Which is a set of acid salts and can react with base?

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  9. The thermal stability of the hybrides of oxygen family is in order :

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  10. Which of the following reactions does not produce oxygen ?

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  11. The gases respectively absorbed by alkaline pyrogallon and oil of cinn...

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  12. Alkaline KIis oxidised by ozone to :

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  13. Which of the following is oxidised by O(3)?

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  14. Identify the incorrect statement with respect to ozone.

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  15. The aqeous solution of hydrogen peroxide:

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  16. When H(2)S is passed through nitric acid and acidified KMnO(4) solutio...

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  17. Consider the following compounds : (i) sulpher dioxide (ii) hydrog...

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  18. When an article is bleached by SO(2) it loses its colour. The colour c...

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  19. Which of the following can convert acidified Cr(2)O(7)^(2-) to green ?

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  20. In the reaction, H(2)SO(4)+P(2)O(5)overset(Delta)to (X)+SO(3), the pro...

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