Waec Chemistry 1999 Past Questions and Answers

Question 11:

• WAEC 1999

Which of the following halogens is the most reactive?

A. F₂
B. Br₂
C. L₂
D. Cl[/sub]

Question 12:

• WAEC 1999

The crystal layers in graphite are held together by

A. Electrostatic forces
B. Van der Waals' forces
C. Hydrogen bonds
D. Covalent bonds

Question 13:

• WAEC 1999

Which of the following compounds has the highest ionic character?

A. PCI₅
B. SiCI₄
C. AICI₃
D. KCI

Question 14:

• WAEC 1999

If an element with high electron affinity combines with another element with low ionization energy the bond formed will be mainly

A. Covalent
B. Ionic
C. Dative
D. Metallic

Question 15:

• WAEC 1999

One mole of a compound M(HCO₃)₂ has a mass of 162g. Calculate the relative atomic mass of M. [H = 1, C =12, O = 16]

A. 122
B. 101
C. 53
D. 40