POST UTME FUTA 2024 Chemistry | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The s\tandard enthalpy of formation of CO2(g) is -393.5 kJ/mol. Calculate the s\tandard enthalpy of formation of CO(g) and O2(g) from the following equation: CO2(g) → CO(g) + 1/2O2(g).
A. -110.5 kJ/mol
B. -110.5 kJ/mol
C. -110.5 kJ/mol
D. -110.5 kJ/mol
Question 2
A 2.5 g sample of a metal is dissolved in 50 mL of 0.1 M HCl. If the metal is a member of the 3d transition series, what is the number of moles of the metal that reacted with the acid?
A. 0.05 mol
B. 0.10 mol
C. 0.15 mol
D. 0.20 mol
Question 3
A sample of a gas has a volume of 2.0 L at a temperature of 25°C and a pressure of 1 atm. If the temperature is increased to 50°C and the pressure is increased to 2 atm, what is the new volume of the gas?
A. 4.0 L
B. 2.0 L
C. 1.0 L
D. 0.5 L
Question 4
The s\tandard enthalpy of formation of CO2(g) is -393.5 kJ/mol. If 2.5 mol of CO2 is produced at 298 K, what is the total energy change (ΔH) for the reaction?
A. -987.5 kJ
B. -993.5 kJ
C. -998.5 kJ
D. -1003.5 kJ
Question 5
A 0.5 M solution of AgNO3 is mixed with a 0.5 M solution of NaCl. If the reaction is allowed to go to completion, what is the concentration of AgCl that will precipitate out of the solution?
A. 0.5 M
B. 0.25 M
C. 1.0 M
D. 0.75 M
Question 6
A 2.5 L flask contains 0.5 mol of an ideal gas at 25°C. Calculate the work done by the gas when it expands to 5 L at the same temperature.
A. 1.4 kJ
B. 2.5 kJ
C. 3.5 kJ
D. 4.5 kJ
Question 7
A sample of a metal oxide has a mass of 30 g and a volume of 15 mL. If the density of the metal oxide is 5.0 g/mL, what is the molar mass of the metal oxide?
A. 150 g/mol
B. 200 g/mol
C. 250 g/mol
D. 300 g/mol
Question 8
A solution of 0.1 M NaOH is titrated with 0.1 M HCl. What is the concentration of the resulting solution after 25 mL of HCl has been added?
A. 0.05 M
B. 0.1 M
C. 0.15 M
D. 0.2 M
Question 9
The diagram below shows the structure of a biomolecule. What type of biomolecule is it?
A. Protein
B. Carbohydrate
C. Lipid
D. Nucleic acid
Question 10
The reaction of cyclohexanol with concentrated sulfuric acid produces a cyclic ether. What is the name of the cyclic ether produced?
A. Cyclohexene oxide
B. Cyclohexanone
C. Cyclohexanol
D. Cyclohexane
Question 11
A sample of a gas has a volume of 2.50 L at a pressure of 1.00 atm. What is the volume of the gas at a pressure of 3.00 atm, assuming the temperature remains cons\tant?
A. 1.67 L
B. 1.67 L
C. 1.67 L
D. 1.67 L
Question 12
The diagram below shows the structure of a polymer. What type of polymer is it?
A. Polyethylene
B. Polypropylene
C. Polyvinyl chloride
D. Polyester
Question 13
A sample of CO2 gas is collected over water at a temperature of 25°C and a pressure of 1 atm. If the vapor pressure of water at 25°C is 0.0313 atm, what is the partial pressure of CO2 in the sample?
A. 0.9687 atm
B. 0.0313 atm
C. 0.9687 atm
D. 1.0 atm
Question 14
The reaction of magnesium with water produces a gas. What is the name of the gas produced?
A. Hydrogen
B. Nitrogen
C. Oxygen
D. Carbon dioxide
Question 15
The s\tandard enthalpy of formation of CO(g) is -110.5 kJ/mol. If 2.5 mol of CO is produced at 298 K, what is the total energy change (ΔH) for the reaction?
A. -275.0 kJ
B. -280.0 kJ
C. -285.0 kJ
D. -290.0 kJ

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