Post Utme Chemistry Past Questions and Answers

Question 841:

Aluminum hydroxide is used in the dyeing industry as a ____________

A. Salt
B. Dye
C. Mordant
D. Dispersant

Question 842:

An isomer of \(C _{5} H _{12}\) is ____________

A. Butane
B. 2-methybutane
C. 2-methylpropanc
D. 2-ethylbutane

Question 843:

Vulcanization involves the removal of ____________

A. A monomer
B. The single bond
C. The double bond
D. A polymer

Question 844:

Phenolphthalein in acid solution is ____________

A. Red
B. Orange
C. Colourless
D. Yellow

Question 845:

When iron is exposed to moisture and it rusts, the value of \(\Delta G\) for the reaction is ____________

A. Neutral
B. Zero
C. Positive
D. Negative