What is Burtonian line is seen in? and explain in detail?
Ans. is 'b' i.e., Lead o Burtonian line is blue line, which is seen on upper gums in lead poisoning.o Similar blue line (but not called burtonian line in these cases) is also seen in poisoning with Mercury (Hg), Copper (Cu)y Silver (Ag), bismuth (Bi), andiron (Fe).