Jamb Chemistry 2005 Past Questions and Answers

Question 21:

• JAMB 2005

The solubility curve shows the variation of solute concentration with

A. Volume
B. Temperature
C. Vapour density
D. Pressure

Question 22:

• JAMB 2005

The air around smelting industries is likely to contain

A. H₂S, CO and N₂
B. CO₂, SO₃ and H₂
C. H₂, SO₂ and CO₂
D. SO₂, N₂ and CO₂

Question 23:

• JAMB 2005

Kerosine is commonly used to remove the red colour stain of palm oil from cloths because it

A. Helps to spread the oil over a larger surface area
B. React with the oil to form an odourless compound
C. Makes the oil evaporate easily by dissolving it
D. Helps to dilute the oil and reduce its colour

Question 24:

• JAMB 2005

The gas that is the most dangerous pollutant to human is

A. Sulphur (IV) oxide
B. Carbon (IV) oxide
C. Nitrogen (II) oxide
D. Hydrogen sulphide

Question 25:

• JAMB 2005

Natural water collected from rivers and ponds contain oxygen, carbon (IV) oxide and

A. Nitrogen
B. Hydrogen
C. Chlorine
D. Sulphur
E. Oxide