Chemistry · Oct / Nov 2016 · Paper 12 · Question 31

Electrical energy can be generated using simple cells as shown. [diagram of a simple cell with a voltmeter V, two metal electrodes labelled 'metals', and an electrolyte] Which pair of metals, when used as electrodes, will give the largest reading on the voltmeter, V?

1. Alead and sodium
2. Bmagnesium and copper
3. Cpotassium and silver
4. Dsodium and potassium

As printed in the paper