Analytical Chemistry Question 1
Question: A white solid ‘A’ on heating gives off a gas which turns lime water milky. The residue is yellow when hot but turns white on cooling. This solid ‘A’ is
[MP PMT 1999]
Options:
A) Zinc sulphate
B) Zinc carbonate
C) Lead sulphate
D) Lead carbonate
Show Answer
Answer:
Correct Answer: B
Solution:
$ ZnCO_3\xrightarrow{\Delta }ZnO+\underset{\text{Turns lime water milky}}{\mathop{CO_2}} $
$ (Hot)\underset{yellow}{\mathop{ZnO}}\underset{White}{\mathop{ZnO}}(Cool) $
BETA
