Question

Which is used in Holmes signals

Answer 1

Answer:

phosphine

Explanation:

Holmes signal - A mixture of calcium carbide and calcium phosphide placed in a container which reacts with water to produce gases (PH3 and C2H2) which burn and thus guide the ships in sea.so PH3 gas that is called PHOSPHINE is used in holmes signal.

Answer 2

Answer:

Holmes signal is the containers containingcalcium carbide and calcium phosphide gas. These two gases are pierced in a container and thrown in water. Then they produce gases PH3 and C2H2 which burn and it is served as a signal.