Post Utme Chemistry Past Questions and Answers

Question 366:

The properties of electrovalent compounds include the following except ____________

A. High melting point and boiling point.
B. Conduction of electricity in the molten state.
C. High volatility at room temperature.
D. Ionization in aqueous solution.

Question 367:

Which of the following pairs illustrates isotopy?

A. But-l-ene and but 2-ene
B. Carbon and hydrogen
C. Oxygen and ozone
D. Hydrogen and deuterium

Question 368:

Carbon is often deposited in the exhaust-pipe of cars because of the ____________

A. Presence of carbon in petrol.
B. Dehydrogenation of petrol.
C. Incomplete combustion of petrol,
D. Presence of additives in petrol.

Question 369:

Sulphur burns in air to form ____________

A. An acidic oxide
B. A basic oxide
C. An amphoteric oxide m
D. A neutraloxide.

Question 370:

Chlorine is used in water treatment as ____________

A. A germicide.
B. A decolorizing agent.
C. Anantioxidant
D. A coagulating agent.