Post Utme Chemistry Past Questions and Answers

Question 491:

Which of the following statements is not corrected about electrolysis?

A. Reduction occurs at the anode
B. Anions migrate to the anode
C. Positive ions migrate to the cathode
D. Concentration affects the discharge of ions

Question 492:

Separation of mixtures of solids by physical methods can be based on differences in the following except ____________

A. Melting point
B. Solubility
C. Particle size
D. Molar mass

Question 493:

Brass is an alloy containing copper and ____________

A. Zinc
B. Tin
C. Silve
D. Lead

Question 494:

Which of the following reduces the activation energy a chemical reaction?

A. Freezing mixture
B. Reducing agent
C. Wate
D. Catalyst

Question 495:

In the electrolysis of brime, the anode is ____________

A. Carbon
B. Platinum
C. Zinc
D. Coppe