Jamb Chemistry 2006 Past Questions and Answers

Question 6:

• JAMB 2006

The efficiency of a solid catalyst to increase reaction rates depends on its

A. Surface area
B. Solubility
C. Concentration
D. Quantity

Question 7:

• JAMB 2006

Dynamic equilibrium describes a situation where

A. A reaction gives back the reactant
B. Te concentration of the reactant and products is equal
C. Both forward and and reverse reactions proceed at the same rate
D. Reactants are converted to products

Question 8:

• JAMB 2006

The ion that will give a white precipitate with aqueous NaOH and soluble in excess of the base is

A. Ca²⁺
B. Mg²⁺
C. Zn²⁺
D. Cu²⁺

Question 9:

• JAMB 2006

Which of the following pairs of substance will react further with oxygen to form a higher oxide?

A. CO₂ and H₂O
B. NO and H₂O
C. CO and CO₂
D. SO₂ and NO

Question 10:

• JAMB 2006

The characteristic colour of the flame shown when a copper sail moistened with concentrated hydrochloric acid on a platinum wire is put on bunsen burner is

A. Lilac
B. Green
C. Yellow
D. Brick-red