Home
Class 12
CHEMISTRY
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.
Promotional Banner

Topper's Solved these Questions

  • THE P-BLOCK ELEMENTS

    NCERT FINGERTIPS|Exercise Phosphorus Halides|5 Videos

  • THE P-BLOCK ELEMENTS

    NCERT FINGERTIPS|Exercise Oxoacids Of Phosphorus|5 Videos

  • THE P-BLOCK ELEMENTS

    NCERT FINGERTIPS|Exercise Phosphorous : Allotropic Forms|4 Videos

  • THE D- AND F- BLOCK ELEMENTS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • THE SOLID STATE

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

A ehite chemical compound becomes hard on mixing proper quantity of water. It is also used to maintain joints in a fixed position. Name the chemical compound and write its chemical formula. Chemical equation to show what happens when water is added to this compound in proper quantity.

Which of the following are made using chemical compounds of petroleum origin (petrochemicals)

Which of the following chemical compounds is used as a preservative in pickle?

A white chemical compound becomes hard on mixing with proper quantity of water. It is also used in surgery to maintain joints in a fixed position. Name the chemcial compound.