Jamb Chemistry Past Questions and Answers

Question 1971:

• JAMB 2018

The Consecutive members of an alkane homologous series differ by

A. CH
B. CH\(_2\)
C. CH\(_3\)
D. C\(_n\)H\(_n\)

Question 1972:

• JAMB 2018

A correct electrochemical series can be obtained from Na, Ca, Al, Mg, Zn, Fe, Pb, H, Cu, Hg, Ag, Au by interchanging

A. Al and Mg
B. Zn and Fe
C. Zn and Pb
D. Pb and H

Question 1973:

• JAMB 2018

A basic postulate of the kinetic theory of gases is that the molecules of a gas move in straight lines between collisions. This implies that

A. Collisions are perfectly elastic
B. Forces of repulsion exist
C. Forces of repulsion and attraction are in equilibrium
D. Collisions are inelastic

Question 1974:

• JAMB 2018

On which of the following is the solubility of a gaseous substance dependent?
I. Nature of solvent
II. Nature of solute
III. Temperature
IV. Pressure

A. I, II, III and IV
B. I and II only
C. II only
D. I, III and IV only

Question 1975:

• JAMB 2018

Which of the following statements is correct about the periodic table?

A. Elements in the same period have the same number of valence electrons
B. The valence electrons of the elements in the same period increase progressively across the period
C. Elements in the same group have the same number of electron shells
D. The non-metallic Properties of the elements tend to decrease across each period