Post Utme Chemistry Past Questions and Answers

Question 451:

When a metal plate is placed in a solution containing its ions, some of the metallic ions in the solution will take up electrons from the metal plate and deposit themselves as neutral atoms on the plate, which favours the reaction?

A. The electrode or metal plate becomes positively charged with respect to the solution/electrolyte
B. The electrode or metal plate becomes neutral with respect to the solution/electrolyte
C. The electrode or metal plate has more electrons with respect to the solution/electrolyte
D. The electrode or metal plate becomes negatively charged with respect to the solution/electrolyte

Question 452:

How many isomers can be obtained from C4H10?

A. O
B. 1
C. 2
D. 3

Question 453:

Who discovered the atom?

A. Rutherford
B. Dalton
C. Neils Bohr
D. Goldstein

Question 454:

The technique used for the separation of immiscible liquids is ____________

A. Distillation
B. Chromatography
C. The use of separating funnel
D. Fractional distillation

Question 455:

Which of the following denotes an alpha particle?

A. \({ }_{0}^{1} \mathrm{n}\)
B. \({ }_{2}^{4} \mathrm{He}\)
C. \({ }_{-1}\) e
D. \({ }_{4}^{9} \mathrm{Be}\)