D-And F-Block Elements Ques 186
Question: A metal when left exposed to the atmosphere for some time becomes coated with green basic carbonate. The metal in question is
[NDA 1999]
Options:
A) Copper
B) Nickel
C) Silver
D) Zinc
Show Answer
Answer:
Correct Answer: A
Solution:
$ 2Cu+CO_2+H_2O+O_2\to \underset{\text{Basic copper carbonate}}{\mathop{CuCO_3.Cu{{(OH)}_2}}}, $
