POST UTME FUTA 2025 Chemistry | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 1.00 L sample of a gas at 25°C and 1.00 atm is collected over water at 25°C. If the vapor pressure of water at 25°C is 0.0313 atm, what is the partial pressure of the gas?
A. 0.968 atm
B. 0.980 atm
C. 0.992 atm
D. 1.00 atm
Question 2
A sample of 1.0 g of a polymer is dissolved in 100 mL of a solvent. The solution has a vis\cosity of 2.5 cP. What is the molecular weight of the polymer?
A. 1000 g/mol
B. 5000 g/mol
C. 10000 g/mol
D. 20000 g/mol
Question 3
A 1.0 M solution of HCl is prepared by dissolving 36.5 g of HCl in 1000 mL of water. What is the pH of the solution?
A. 1
B. 2
C. 3
D. 4
Question 4
The s\tandard enthalpy of formation of CO2(g) is -393.5 kJ/mol. Calculate the s\tandard enthalpy of formation of H2O(l) from the following reaction: H2(g) + 1/2 O2(g) → H2O(l).
A. -285.8 kJ/mol
B. -393.5 kJ/mol
C. -483.2 kJ/mol
D. -572.9 kJ/mol
Question 5
A mixture of 0.500 g of an unknown metal oxide and 25.0 mL of 0.100 M HCl produces 0.250 L of CO2 at 25°C and 1.00 atm. Calculate the molar mass of the metal oxide.
A. 100 g/mol
B. 200 g/mol
C. 300 g/mol
D. 400 g/mol
Question 6
A 2.0 g sample of a hydrocarbon is burned in a bomb calorimeter, and the heat of combustion is found to be - 36.5 kJ/g. What is the molar heat of combustion of the hydrocarbon?
A. - 1365 kJ/mol
B. - 1368 kJ/mol
C. - 1371 kJ/mol
D. - 1374 kJ/mol
Question 7
A 2.00 M solution of hydrochloric acid (HCl) is prepared by dissolving 36.5 g of HCl in enough water to make 1.00 L of solution. What is the molarity of the solution?
A. 1.00 M
B. 2.00 M
C. 3.00 M
D. 4.00 M
Question 8
The diagram below shows a titration setup. What is the purpose of the burette?
A. To measure the volume of the acid
B. To measure the volume of the base
C. To mix the acid and base
D. To measure the pH of the solution
Question 9
A solution containing 0.50 g of NaCl is prepared by dissolving the salt in 100 mL of water. What is the concentration of the solution in g/L?
A. 5.0 g/L
B. 5.5 g/L
C. 6.0 g/L
D. 6.5 g/L
Question 10
A sample of 1.0 g of a non-metallic element has a density of 2.5 g/cm^3. If the element is a member of group 16, what is its atomic number?
A. 16
B. 32
C. 48
D. 64
Question 11
A mixture of 2.50 g of NaCl and 1.50 g of KCl is dissolved in 100 mL of water. Calculate the molarity of the solution.
A. 0.05 M
B. 0.10 M
C. 0.15 M
D. 0.20 M
Question 12
A sample of a hydrocarbon has a density of 0.800 g/mL and a molecular weight of 42.0 g/mol. If 1.00 L of the hydrocarbon is burned in a combustion reaction, what is the volume of O2 consumed?
A. 2.00 L
B. 4.00 L
C. 6.00 L
D. 8.00 L
Question 13
A solution of 0.1 M HCl is mixed with a solution of 0.2 M NaOH. If 20.0 mL of HCl is used, what is the concentration of the resulting solution?
A. 0.1 M
B. 0.2 M
C. 0.3 M
D. 0.4 M
Question 14
A solution of 0.100 M NaCl is prepared by dissolving 0.100 mol of NaCl in 1.00 L of water. What is the concentration of Cl- ions in the solution?
A. 0.100 M
B. 0.200 M
C. 0.300 M
D. 0.400 M
Question 15
A sample of 1.0 g of a subs\tance is found to have a mass of 1.1 g after being placed in a vacuum chamber. What is the molecular weight of the subs\tance?
A. 10 g/mol
B. 20 g/mol
C. 30 g/mol
D. 40 g/mol

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