Chemistry 2000 Waec Past Questions and Answers

Question 1 :

• WAEC 2000

The atoms of four elements are represented as ₂₀Q, ₁₆R, ₁₀S and ₈T Which of the elements would be unreactive?

A. Q
B. R
C. S
D. T

Question 2 :

• WAEC 2000

The atoms of four elements are represented as ₂₀Q, ₁₆R, ₁₀S and ₈T Which of the elements would be unreactive?

A. Q
B. R
C. S
D. T

Question 3 :

• WAEC 2000

Chlorine atom forms CI by

A. Losing one electron
B. Sharing one electron
C. Donating lone pair of electrons
D. Gaining one electron

Question 4 :

• WAEC 2000

An element Z has a combining power of 3. Which of the following formulae is correct of its compounds?

A. ZSO₃
B. Z₃CI₂
C. Z ₂O ₃
D. ZS₃

Question 5 :

• WAEC 2000

Electrovalent compounds are characterized by

A. Solubility in ethanol
B. High molar mass
C. High melting point
D. Strong oxidizing ability