Question
Chemistry Question on p -Block Elements
The material used in warfare in making smoke screens for military purposes is:
A
PH3
B
PCl5
C
SiCl4
D
NH3
Answer
PH3
Explanation
Solution
Phosphine (PH3) when comes in contact with air, to forms vortex rings of P2O5 in the forms of white smoke. Hence, it is used to prepare smoke screen in warfare.