Jamb Chemistry 1994 Past Questions and Answers

Question 11:

• JAMB 1994

Which of the following physical properties decreases down a group in the periodic table?

A. Atomic radius
B. Ionic radius
C. Electropositivity
D. Electronegativity

Question 12:

• JAMB 1994

Element X, Y and Z belong to a groups I, V and VII respectively. Which of the following is TRUE about the bond types of XZ and YZ₃?

A. Both are electrovalent
B. Both are covalent
C. XZ is electrovalent and YZ₃ is covalent
D. XZ is covalent and YZ₃ is electrovalent

Question 13:

• JAMB 1994

A solid that absorbs water from he atmosphere and forms an aqueous solution is?

A. Hydrophilic
B. Efforescent
C. Deliquescent
D. Hygroscopic

Question 14:

• JAMB 1994

A major effect of oil pollution in coastal waters is the?

A. Destruction of marine life
B. Desalination of the water
C. Increase in the acidity of the water
D. Detoxification of the water

Question 15:

• JAMB 1994

Sodium chloride has no solubility product value because of its?

A. Saline nature
B. High solubility
C. Low solubility
D. Insolubility