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Chemistry

Chemistry · Quick practice · answer shown after each question

Acids, bases, salts, redox

Question 1 of 10

Question 1 of 10

Oxidation can be defined as

Question 2 of 10

Question 2 of 10

A solution with pH 12 is

Question 3 of 10

Question 3 of 10

How many coulombs are needed to liberate 1.12 dm³ of hydrogen at s.t.p.? (F = 96,500 C)

Question 4 of 10

Question 4 of 10

The gas produced at the cathode during electrolysis of dilute sulphuric acid is

Question 5 of 10

Question 5 of 10

Oxidation is defined as

Question 6 of 10

Question 6 of 10

In the reaction 2Fe³⁺ + Sn²⁺ → 2Fe²⁺ + Sn⁴⁺, the oxidising agent is

Question 7 of 10

Question 7 of 10

Zinc reacts with dilute hydrochloric acid to produce

Question 8 of 10

Question 8 of 10

Which salt is insoluble in water?

Question 9 of 10

Question 9 of 10

In the reaction Zn + Cu²⁺ → Zn²⁺ + Cu, the oxidising agent is

Question 10 of 10

Question 10 of 10

The oxidation number of Mn in KMnO4 is

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