Jamb Chemistry 2017 Past Questions and Answers

Question 11:

• JAMB 2017

The constituent of air necessary in the rusting process are

A. O₂ and H₂O
B. Ar and CO₂
C. CO₂ and H₂O
D. O₂ and CO₂

Question 12:

• JAMB 2017

For a general equation of the nature xP + yQ → mR + nS, the expression for the equilibrium constant is

A. K [P]^x [Q]^y
B. \(\frac{[P]^x [Q]^y}{[R]^m [S]^n}\)
C. \(\frac{[R]^m [S]^n}{[P]^x [Q]^y}\)
D. \(\frac{m[R] n[S]}{x[P] y[Q] }\)

Question 13:

• JAMB 2017

A given mass of gas occupies 2dm³ at 300k. At what temperature will its volume be doubled, keeping the pressure constant?

A. 400k
B. 480k
C. 550k
D. 600k

Question 14:

• JAMB 2017

The oxidation number of iodine in KIO₃ is

A. +7
B. +3
C. +5
D. +6

Question 15:

• JAMB 2017

An isomer of C₅H₁₂ is

A. 2–ethyl butane
B. Butane
C. 2–methyl butane
D. 2–methyl propane