Post Utme Chemistry Past Questions and Answers

Question 506:

Compounds that have the same molecular formula but different structures are said to be ____________

A. Allotropic
B. Isotopic
C. Polymeric
D. Isomeric

Question 507:

Which of the following statements is not correct?

A. Carbon exhibits allotropy
B. Sulphur exhibits allotropy
C. Chlorine exhibits allotropy \(\quad\)
D. Hydrogen is a gas

Question 508:

\(300 cm ^{3}\) of a gas has a pressure \(400 mmHg _{ g }\). If the pressure is reduced to \(150 mmHg\). Find its volume.

A. \(700 cm ^{3}\)
B. \(800 cm ^{3}\)
C. \(350 cm ^{2}\)
D. \(112.5 cm ^{2}\)

Question 509:

The ideal gas equation can be written as ____________

A. \(\frac{V_{1}}{T_{1}}=\frac{V_{2}}{T_{2}}\)
B. \(P_{1} V_{1}=P_{2} V_{2}\)
C. \(V_{2}=\frac{P_{1} V_{1} T_{1}}{P_{2} T_{2}}\)
D. \(P_{1} V_{1} T_{2}=P_{2} V_{2} T_{1}\)

Question 510:

Ethyne, Ethene, Cyclohexane and Propene can be classified as ____________

A. Alkenes
B. Aromatic compounds
C. Saturated compounds
D. Multiple bond hydrocarbons