1
WB JEE 2019
MCQ (Single Correct Answer)
+2
-0.67
A copper coin was electroplated with Zn and then heated at high temperature until there is a change in colour. What will be the resulting colour?
A
white
B
black
C
silver
D
golden
2
WB JEE 2016
MCQ (Single Correct Answer)
+1
-0.25
The metal which can be used to obtain metallic Cu from aqueous CuSO4 solution is
A
Na
B
Ag
C
Hg
D
Fe
Questions Asked from MCQ (Single Correct Answer)
WB JEE Subjects