Jamb Chemistry 2007 Past Questions and Answers

Question 31:

• JAMB 2007

the elements that belong to the third period of the periodic table are

A. Li, Be, Al and P
B. Na, P, O and Cl
C. B, C, N and O
D. Nz, Mg, S and Ar

Question 32:

• JAMB 2007

A metal X forms two bromides with the formulae XBr₂ and XBr₃. What type of bonding exists between X and bromine in the bromide?

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

Question 33:

• JAMB 2007

A mixture of petrol and water can be separated through

A. Centrifugation
B. Distillation
C. The use of separating funnel
D. The use of filter paper

Question 34:

• JAMB 2007

Which of the following represents an aromatic compound?

A. C₆H₅OH
B. C₆H₁₂
C. C₆H₉OH
D. C₆H₈

Question 35:

• JAMB 2007

CH₃CH₂Cl + KCN → CH₃CH₂CN + KCl
In the reaction above, the cyanide is

A. Hydrophobic
B. Hydrophilic
C. Nucleophilic
D. Electrophilic