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Holme's signal uses chemical compound...

Holme's signal uses chemical compound

A

calcium carbide

B

calcium phosphide

C

calcium carbide and calcium phosphide

D

calcium carbide and aluminium carbide.

Text Solution

Verified by Experts

The correct Answer is:
C
Holme's signal uses calcium carbide and calcium phosphide. The spontaneous combustion of phosphine is technically used in Holme's signals. Containers containing a mixture of calcium carbide and calcium phosphide are pierced and thrown in the sea when the gases burn and serve as a signal.
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