118.8 cm2 surface of the copper cathode of a voltameter is to be coated with 10-6m thick copper of density 9 x 103 kgm-3. How long will the process run with 10A constant current? [e.c.e. of copper = 3.3 x 10-7 kg C-1]
A.
10.8 min
B.
20.0 min.
C.
0.54 min.
D.
15.0 min.
Answer: C
To see detailed solution to this question and thousands of other questions offline, download TestDriller UTME. Practice rigorously for UTME, enjoy educational games, summary of JAMB literature books, compete with your peers, win prizes and more.