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Chemistry

Chemistry · Quick practice · answer shown after each question

Electrochemical cells and electrolysis

Question 1 of 10

Question 1 of 10

In the electrolysis of concentrated sodium chloride solution, the gas at the anode is

Question 2 of 10

Question 2 of 10

The lead–acid accumulator is a

Question 3 of 10

Question 3 of 10

The dry Leclanché cell uses

Question 4 of 10

Question 4 of 10

Aluminium is extracted by the electrolysis of

Question 5 of 10

Question 5 of 10

In the electrolysis of dilute NaCl solution, the gas at the cathode is

Question 6 of 10

Question 6 of 10

Electrolysis of brine produces chlorine, hydrogen and sodium hydroxide.

Question 7 of 10

Question 7 of 10

Positive ions in electrolysis are called ___.

Question 8 of 10

Question 8 of 10

Electroplating an iron spoon with silver requires the spoon to be the

Question 9 of 10

Question 9 of 10

In electrolysis, anions move to the anode.

Question 10 of 10

Question 10 of 10

E°(Cu²⁺/Cu) = +0.34 V and E°(Zn²⁺/Zn) = −0.76 V. The e.m.f. of the Zn/Cu cell is ___ V.

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.