Post Utme Bayero University Kano Chemistry Past Questions and Answers

Question 6:

In an electrochemical cell, polarization is caused by ____________

A. Tetraoxosulphate (IV) acid
B. Hydrogen
C. Chlorine
D. Oxygen

Question 7:

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

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

Question 8:

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

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

Question 9:

In the laboratory preparation of ammonia, the flask is placed in a slanting position, so as to ____________

A. Enhance the speed of reaction
B. Prevent formation of precipitate
C. Prevent condensed water from breaking the reaction flask
D. Enable the proper mixing of the reactant in the flask.

Question 10:

H | CH, - CCH, - CH=CH: | CHa
The IUPAC nomenclature for the compound above is ____________

A. 2-methylpent-I-ene
B. 2-methylpent-Il-ene
C. 4methylpent-1-ene
D. 3methylpent-2-ene