Post Utme Chemistry Past Questions and Answers

Question 1081:

Deliquescent substances are used for ____________

A. Cooling
B. Wetting
C. Melting
D. Drying

Question 1082:

When a solid changes into gaseous form, without passing through the liquid state, it is said to have undergone ____________

A. Sublimation
B. Evaporation
C. Crystallization
D. Distillation

Question 1083:

Which of the following is used as a ripening agent for fruits?

A. Methane
B. Propene
C. Ethane
D. Butane

Question 1084:

The oxides that will react further with oxygen to form higher oxides are ____________

A. \(CO _{2} \& H _{2} O\)
B. \(NO\) and \(H _{2} O\)
C. \(SO _{2}\) and \(NO\)
D. \(CO\) and \(CO _{2}\)

Question 1085:

Determine the molar mass of a compound, if \(0.4\) mole of it has a mass of \(40 g\)

A. \(160 g / mol\)
B. \(100 g / mol\)
C. \(16 g /\) \(mol\)
D. \(0.01 g / mol\)