Post Utme University of Uyo Chemistry Past Questions and Answers

Question 11:

Which of the following combination is used for metal welding?
i. Oxygen and Ethyne
ii. Hydrogen and Ethyne
iii. Hydrogen and Oxygen
iv. Ethyne, Hydrogen and Oxygen

A. I and ii
B. Iii and iv
C. I and iii
D. Ii and iv

Question 12:

A gas formed when ammonium trioxonitrate(v) is heated with sodium hydroxide

A. Hydrogen and oxygen
B. Nitrogen (IV) oxide
C. Ammonia
D. Oxygen

Question 13:

Which of the following are isomers

A. Ethanol and dimethyl ether
B. Benzene and methylbenzene
C. Ethanol and propanone
D. Trichloromethane and tetrachloromethane

Question 14:

The characteristic reaction of carbonyl compound is ____________

A. Substitution
B. Elimination
C. Addition
D. Specification

Question 15:

A balanced chemical obeys the laws of ____________

A. Conservation of mass
B. Definite proportion
C. Multiple proportion
D. Conservation of energy