Which compound is used in smoke screens?

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) Smoke screens are produced using calcium phosphide $(Ca_3P_2)$.When $Ca_3P_2$ comes in contact with water,it undergoes hydrolysis to produce phosp

Vedclass · Accepted Answer

$Ca_3P_2$

Vedclass · Answer

(C) Smoke screens are produced using calcium phosphide $(Ca_3P_2)$.When $Ca_3P_2$ comes in contact with water,it undergoes hydrolysis to produce phosphine gas $(PH_3)$.The reaction is: $Ca_3P_2 + 6H_2O \rightarrow 3Ca(OH)_2 + 2PH_3$.Phosphine gas is spontaneously inflammable in air and produces dense white fumes of phosphoric acid $(H_3PO_4)$,which act as a smoke screen.

Similar Questions

What type of element is Moscovium $(Mc)$?

The orange solid on heating gives a colourless gas and a green solid which can be reduced to metal by aluminium powder. The orange and the green solids are, respectively

What is the action of chlorine on excess ammonia?

Among the following compounds,which on heating do not produce $N_2$?

What happens when excess water is added to a solution of $BiCl_3$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module