Jamb Chemistry 1986 Past Questions and Answers

Question 11:

• JAMB 1986

When steam is passed through red hot carbon, which of the following are produced?

A. Hydrogen oxygen and carbon (IV) oxide
B. Hydrogen and carbon (IV) oxide
C. Hydrogen and carbon (II) oxide
D. Hydrogen and trioxocarbonate (IV) acid

Question 12:

• JAMB 1986

The exhaust fumes from a garage in a place that uses petrol of high sulphur content are bound to contain?

A. CO and SO₃
B. CO and SO₂
C. CO,SO₂ and SO₃
D. CO and H₂S

Question 13:

• 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 14:

• JAMB 1986

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

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

Question 15:

• JAMB 1986

In the course of an experiment, two gases X and Y were produced. X turned wet lead ethanoate to black and Y bleached moist litmus paper. What are the element(s) in each of the gases X and Y respectively?

A. H and S;Cl
B. H and O;Cl
C. H and S;C and O
D. H and Cl;S and O