Electrochemical Cells, Redox Series, Electrode Potentials Jamb Chemistry Past Questions
Question 11
The product formed at the the cathode during the electrolysis of sodium chloride solution with carbon electrodes is?
- A. sodium
- B. chlorine
- C. hydrogen
- D. sodium hydroxide
- E. oxygen
Question 12
The products of the reaction between dilute sulphuric acid and sodium thiosulphate crystals are?
- A. Na2SO4 + SO2 + O2 + H2O
- B. Na2SO3 + SO3 + O2 + H2O
- C. Na2SO4 + SO2 + S + H2O
- D. Na2SO4 + SO3 + S + H2O
- E. Na2SO4 + SO2 + H2O only
Question 13
A correct electrochemical series can be obtained from K, Na, Ca, Al, Mg, Zn, Fe, Pb, H, Cu, Hg, Ag, Au by interchanging?
- A. Al and Mg
- B. Zn and Fe
- C. Zn and Pb
- D. Pb and H
- E. Au and Hg
Question 14
Which of the following metals will displace iron from a solution of iron(ll)tetraoxosulphate(lV)?
- A. Copper
- B. Mercury
- C. Silver
- D. Zinc
- E. Gold
