Post Utme Chemistry Past Questions and Answers

Question 391:

In linear molecules, the bond angle is ____________

A. \(90^{\circ}\)
B. \(104^{\circ}\)
C. \(180^{\circ}\)
D. \(120^{\circ}\)

Question 392:

An increase in the pressure of a gas results in a decrease in its ____________

A. Mass
B. Vapour density
C. Volume
D. Concentration

Question 393:

An acid is a substance which in the presence of water produces ____________

A. Salts
B. Oxygen
C. Effervescence
D. Hydroxonium ions

Question 394:

Which of the following ions will migrate to the cathode during electrolysis?

A. Zinc ions
B. Chloride ions
C. Sulphide ions
D. Tetraoxosulphate (VI) ions

Question 395:

What quantity of electrons (in mole) is lost when one mole of iron (iI) ions is oxidized to iron (III) ions?

A. 5 mole
B. 4 mole
C. 3 mole
D. 1 mole