Jamb Chemistry 2009 Past Questions and Answers

Question 36:

• JAMB 2009

which of the following metals will show the highest metallic character?

A. Zinc
B. Copper
C. Barium
D. Calcium

Question 37:

• JAMB 2009

Copper metal dissolves in concentrated trioxonitrate (V) acid with the resultant evolution of

A. CO₂
B. SO₂
C. NO₂
D. CO

Question 38:

• JAMB 2009

The type of iron that is best suited for welding, making nails, chains and iron rods is

A. Pig iron
B. Wrought iron
C. Cast iron
D. Iron pyrites

Question 39:

• JAMB 2009

In the electrolytic extraction of aluminum, the function of the molten cryolite is to

A. Precipitate aluminium hdroxide
B. Lower the melting point of aluminium oxide
C. Act as a raw materials
D. Act as a solvent

Question 40:

• JAMB 2009

One of the products of the thermal decomposition of sodium trioxonitrate (V) is

A. Sodium
B. Nitrogen
C. Sodium dioxonitrate (III)
D. Sodium oxide