Jamb Chemistry Past Questions and Answers

Question 461:

• 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 462:

• 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

Question 463:

• JAMB 1986

Which of the following metals does NOT form a stable trioxocarbonate (IV)?

A. Fe
B. Al
C. Zn
D. Pb
E. None of the options is correct

Question 464:

• JAMB 1986

Which of the following sulphides is insoluble in dilute HCl?

A. Na₂S
B. ZnS
C. CuS
D. FeS

Question 465:

• JAMB 1986

When chlorine is passed into water and subsequently exposed to sunlight, the gas evolved is?

A. HCl
B. HOCl
C. O₂
D. Cl₂O