Waec Chemistry Past Questions For Year 2014
Question 26
Which of the following substances with the corresponding pH value is an alkali?
Substance pH
- A. Lime 2.4
- B. Banana 4.6
- C. Distilled water 7.0
- D. Milk of magnesia 10.5
Question 27
Zinc oxide is said to be amphoteric because it
- A. forms an acid salt
- B. is an insoluble base
- C. forms a double salt
- D. reacts with a base or an acid
Question 28
Ethene molecules can be added to one another to form a long chain compound called a
- A. dimer
- B. monomer
- C. polymer
- D. trimer
Question 29
Reduction is the process of
- A. loss of electron
- B. loss of hydrogen
- C. loss of oxygen
- D. addition of electronegative elements
Question 30
The reaction that occurs all the anode when CuSO4(aq) is electrolyzed using carbon electrode is
- A. 2H - (aq) + 2e → H 2(g)
- B. Cu2+ (aq) + 2e → Cu (s)
- C. 4OH (aq) -4e → 2H2O(l) + O2 (g)
- D. SO4(aq)2 -2e → SO 2(g) + O2(g)
