Post Utme Chemistry Past Questions and Answers

Question 261:

Stainless steel is used for making

A. Tools
B. Magnets
C. Coins and medals
D. Moving parts of clock

Question 262:

The product formed at the cathode during the electrolysis of sodium chloride solution with carbon electrodes is ____________

A. Sodium
B. Chlorine
C. Hydrogen
D. Oxygen

Question 263:

The alkanol obtained from the production of soap is ____________

A. Ethanol
B. Glycerol
C. Propanol
D. Glycol

Question 264:

Some metals are extracted from their ores after some preliminary treatments by electrolysis (L), some by thermal reaction (T) and some by a combination of both processes (TL). Which set-up in the following for the extraction of iron, copper and aluminium is correct?

A. Iron (L), copper (L), aluminum (T)
B. Iron (T), copper (L) aluminium (T)
C. Iron (TL), copper (TL)aluminium (TL)
D. Iron (L), copper (T). aluminium (T)
E. Iron (T), copper (L), aluminium (TL)

Question 265:

Which of the following will liberate hydrogen from steam or dilute acid?

A. Iron
B. Mercury
C. Copper
D. Lead