Jamb Chemistry Past Questions For Year 2009

Question 31

CuO(s) + H\(_2\)(g) ↔ Cu(s) + H\(_2\)O(g)

What is the effect of increasing the pressure on the equilibrium reaction above?

jamb 2009

• A. The equilibrium is shifted to the left
• B. The equilibrium is shifted to the right
• C. There is no effect
• D. More H_2(g) is produced

Question 32

A catalyst increase the rate of a chemical reaction by providing a path that?

jamb 2009

• A. raise the activiation energy
• B. increase the temperature
• C. lowers the activation energy
• D. increase the concentration

Question 33

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

jamb 2009

• A. CO₂
• B. SO₂
• C. NO₂
• D. CO

Question 34

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

jamb 2009

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

Question 35

Which of the following allotrope of carbon is a constituent of a lead pencil?

jamb 2009

• A. Graphite
• B. Diamond
• C. Lampblack
• D. Soot