Post Utme Chemistry Past Questions and Answers

Question 546:

Carbon exists naturally in the combined state as ____________

A. Diamond
B. Coal
C. Wood
D. Graphite

Question 547:

The sulphide which is insoluble in dil. Hcl is ____________

A. CuS
B. Na2S
C. Fes
D. Zns

Question 548:

In the industrial production of H² from natural gas, Co² produced along with the H² is removed by ____________

A. Passing mixture into line water
B. Washing under pressure
C. Drying over P5O10
D. Using Ammonical CU2Cl

Question 549:

Which of the following typically represent a photochemical reaction?

A. Conversion of N2O4 to NO2
B. Conversion of Ag halides to metallic Ag
C. Decomposition of Ca(OH)2 to its oxide
D. Formation of H2O from H2 and O2 molecules

Question 550:

One mole of a hydrogen contains 36g of carbon and its vapour density is ____________

A. CH3CH3CH2
B. CH3CH=CH2
C. CH3CH2C=H
D. CH3C = CH