Environmental Pollution - Jamb Chemistry Past Questions and Answers

Question 1:

• JAMB 1982

The nitrogen gas obtained by burning an excess of phosphorus in air has a density higher than the nitrogen from nitrogen compounds because the nitrogen from air is contaminated with?

A. Some unburnt phosporus
B. P₂O₅ vapour
C. Some oxygen
D. Rare gases
E. Carbondioxide

Question 2:

• JAMB 1985

If the ONLY pollutants found in the atmosphere over a city are oxides of nitrogen, suspended lead compounds. carbon monoxide and high levels of methane, the probable source(s) of the pollution must be?

A. Automobile exhaust and biological decomposition
B. Combustion of coal and automobile exhaust
C. Biological decomposition only
D. Combustion of coal, automobile exhaust and biological decomposition
E. Combustion of coal and biological decomposition

Question 3:

• JAMB 1986

Oxygen-demanding waste are considered to be a water pollutant because they?

A. Deplete oxygen which is necessary for the survival of aquatic organism
B. Increase oxygen which is necessary for survival of aquatic organism
C. Increase other gaseous substances which are necessary for the survival of aquatic organisms
D. Deplete other gaseous species which is necessary for the survival of aquatic organisms

Question 4:

• JAMB 1988

An eruption pollution an environment with gas suspected to be H₂S, a poisonous gas. A residue team should spray the environment with?

A. Water
B. Moist SO₂
C. Acidified KMnO₄ and water
D. Water, acidified KMnO₄ and oxygen

Question 5:

• JAMB 1989

The gaseous pollutant sulphur (IV)oxide is most likely to be detected in fairly reasonable quantities in the area around a plant for the

A. Extraction of aluminium from bauxite
B. Production of margarine
C. Smelting of copper
D. Production of chlorine from brine