Waec Chemistry 1988 Past Questions and Answers

Question 26:

• WAEC 1988

How many isomers can be obtained from C_4H[sub]10?
[/sub]

A. O
B. 1
C. 2
D. 3
E. 4

Question 27:

• WAEC 1988

Water gas is a mixture of

A. CO_{2 and H[sub]2}[/sub]
B. CO and H₂O
C. CO₂ and CO
D. CO and N₂
E. CO and H₂

Question 28:

• WAEC 1988

Which of the following metals cannot extracted from its ore by using carbon (ll) oxide as the reducing agent?

A. Cu
B. Zn
C. Al
D. Pb
E. Fe

Question 29:

• WAEC 1988

Which of the following is not a naturally occurring iron ore?

A. FeCl₂
B. Fe₂O₃O₃
C. Fe₂O₃
D. FeCO₃
E. FeS₂

Question 30:

• WAEC 1988

Which of the following equations represents the reaction of chlorine with hot concentrated sodium hydroxide solution?

A. 2KOH+CI₂ → KCIO + KCI + H₂O
B. 4KOH + 2CI → 4KCI + 2H₂O + O₂
C. 6KOH + 3CI₂ → KCIO₃ + 5KCI + 3H₂O
D. 2KOH + CI₂ → 2KCI + H₂O₂
E. KOH + 2CI₂ + H₂O → KCI + 3HCI + O₂