Waec Chemistry 1995 Past Questions and Answers

Question 1:

• WAEC 1995

If a solid has a low melting point and dissolves readily in benzene, it would probably

A. Contain strong electrostatic forces of attraction
B. Conduct electricity in the molten state
C. Dissolve in water
D. Have covalent bonding
E. Absorb moisture on exposure to air

Question 2:

• WAEC 1995

If a solid has a low melting point and dissolves readily in benzene, it would probably

A. Contain strong electrostatic forces of attraction
B. Conduct electricity in the molten state
C. Dissolve in water
D. Have covalent bonding
E. Absorb moisture on exposure to air

Question 3:

• WAEC 1995

Which of the following molecules is linear in shape?

A. CH₄
B. H₂O
C. NH₃
D. H₂S
E. CI₂

Question 4:

• WAEC 1995

Which of the following cannot be deduced from the electronic configuration of a transition metal?

A. Possession of magnetic property
B. Ability to form complex ions
C. Position in the Periodic Table
D. Variable oxidation states
E. Physical properties of the metal

Question 5:

• WAEC 1995

What is the percentage by mass of copper in copper in copper (l) oxide (CU₂O)? [O = 16; CU =64]

A. 88.9%
B. 80.0%
C. 66.7%
D. 20.0%
E. 11.1%