Q. One of the elements present in carnallite shows flame colouration. The colour of the flame is
A) Orange
B) Green
C) Yellow
D) Lilac
Explanation
(d)
The formula of carnallite is $KCl\ .\ MgCl_{2}\ .\ 6H_{2}O.$
In this formula only potassium gives colour (lilac) to flame, whereas magnesium does not give flame colouration.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.