POST UTME FUTO 2017 Chemistry | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A metal (M) reacts with HCl to produce a salt (MS) and H2 gas. The reaction is: M + 2HCl → MS + H2. If 2.5 g of M reacts with 2.5 g of HCl, what is the molar mass of M?
A. 20 g/mol
B. 40 g/mol
C. 60 g/mol
D. 80 g/mol
Question 2
A 10 mL sample of a solution containing 0.5 M NaCl was titrated with 0.5 M AgNO₃. What is the volume of AgNO₃ required to reach the equivalence point?
A. 5 mL
B. 10 mL
C. 15 mL
D. 20 mL
Question 3
The diagram below shows a titration setup. What is the purpose of the burette in this setup?
A. To measure the volume of the titrant
B. To measure the volume of the analyte
C. To mix the titrant and analyte
D. To separate the titrant and analyte
Question 4
Calculate the molar mass of a polymer with the following monomer units: CH2=CH-CH2-CH3.
A. 56.11 g/mol
B. 72.14 g/mol
C. 86.17 g/mol
D. 100.21 g/mol
Question 5
A solution contains 2.5 g of NaCl in 100 mL of water. What is the concentration of the solution in g/L?
A. 0.25 g/L
B. 0.5 g/L
C. 1 g/L
D. 2 g/L
Question 6
A solution of NaOH was prepared by dissolving 25 g of NaOH in 100 g of water. What is the molarity of the solution?
A. 0.5 M
B. 1.0 M
C. 1.5 M
D. 2.0 M
Question 7
A sample of gas at 25°C and 1 atm is compressed to 2 atm. What is the new volume of the gas, assuming ideal behavior?
A. 0.5 L
B. 1 L
C. 2 L
D. 4 L
Question 8
A metal has a density of 8.5 g/cm^3. If a 2.5 cm^3 sample of the metal has a mass of 35 g, what is the molar mass of the metal?
A. 50 g/mol
B. 60 g/mol
C. 70 g/mol
D. 80 g/mol
Question 9
A metal has a density of 8.5 g/cm^3. If a 2.5 cm^3 sample of the metal has a mass of 35 g, what is the molar mass of the metal?
A. 50 g/mol
B. 60 g/mol
C. 70 g/mol
D. 80 g/mol
Question 10
The s\tandard enthalpy of formation of CO2(g) is -393.5 kJ/mol. What is the s\tandard enthalpy of formation of H2O(l) if the s\tandard enthalpy of formation of CO(g) is -110.5 kJ/mol and that of H2(g) is 0 kJ/mol?
A. -285.6 kJ/mol
B. -285.8 kJ/mol
C. -286.0 kJ/mol
D. -286.2 kJ/mol
Question 11
A 0.1 M solution of NaOH is prepared by dissolving 4.0 g of NaOH in 100 mL of water. Calculate the number of moles of NaOH that will dissolve in 1 L of water.
A. 0.01 mol
B. 0.05 mol
C. 0.1 mol
D. 0.2 mol
Question 12
A metal rod is placed in a solution of CuSO4 and a current of 2.0 A is passed through it for 10 minutes. What is the mass of copper deposited at the cathode?
A. 0.25 g
B. 0.50 g
C. 0.75 g
D. 1.0 g
Question 13
The reaction between chlorine gas and sodium hydroxide solution is represented by the equation: Cl2 + 2NaOH → NaCl + NaClO + H2O. What is the oxidation state of chlorine in the product NaClO?
A. 0
B. +1
C. +2
D. +3
Question 14
At 273 K, 1.00 L of an ideal gas at 1.00 atm occupies a volume of 22.4 L. What is the volume of 1.00 mole of this gas at 273 K and 1.00 atm?
A. 22.4 L
B. 11.2 L
C. 44.8 L
D. 56.0 L
Question 15
The s\tandard enthalpy of formation of CO(g) is -110.5 kJ/mol. What is the s\tandard enthalpy of formation of H2O(g) if the s\tandard enthalpy of formation of CO2(g) is -393.5 kJ/mol and that of H2(g) is 0 kJ/mol?
A. -285.6 kJ/mol
B. -285.8 kJ/mol
C. -286.0 kJ/mol
D. -286.2 kJ/mol

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