Jamb Chemistry Past Questions and Answers

Question 1711:

• JAMB 2013

In an electrochemical cell, polarization is caused by

A. Chlorine
B. Oxygen
C. Tetaoxsulphate (Vl) acid
D. Hydrogen

Question 1712:

• JAMB 2013

Calculate the volume in cm³ of oxygen evolved as s.t.p. when a current of 5 A is passed through acidified water for 193s
{F = 96500 Cmol^-1, Molar volume of a gas at s.t.p. = 22.4 dm³}

A. 224.000 dm³
B. 0.056 dm³
C. 0.224 dm³
D. 56.000 dm³

Question 1713:

• JAMB 2013

In an endothermic reaction, if there is a loss in entropy the reaction will

A. Be indeterminate
B. Be spontaneous
C. Not be spontaneous
D. Be at equilibrium

Question 1714:

• JAMB 2013

the minimum amount of energy required for a reaction to take place is

A. Lattice energy
B. Ionization energy
C. Activation energy
D. Kinetic energy

Question 1715:

• JAMB 2013

Which of the following compounds is a neutral oxide?

A. Carbon (IV) oxide
B. Sulphur (Vl) oixide
C. Sulphur (IV) oxide
D. Carbon (ll) oxide