Post Utme Chemistry Past Questions and Answers

Question 631:

The noble gas, argon, is used for ____________

A. Electric are welding
B. Welding brass
C. Underwater welding
D. Steel welding

Question 632:

Hydration of ions in solutions is associated with ____________

A. Absorption of heat
B. Reduction of heat
C. Conduction of heat
D. Liberation of heat

Question 633:

The least easily oxidized of the metals below is ____________

A. Ca
B. Na
C. Zn
D. Al

Question 634:

The reaction of carbide with water gives ____________

A. Ethane
B. Ethane
C. Ethane
D. Ethanal

Question 635:

Alkanones are generally obtained by the oxidation of ____________

A. Primary alkanols
B. Secondary alkanols
C. Tertiary alkanols
D. Alkanoic acid