POST UTME BABCOCK UNIVERSITY 2024 Chemistry | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of a titration setup is shown below.
A. NaOH
B. HCl
C. H2SO4
D. CH3COOH
Question 2
A 0.500 M solution of NaOH is prepared by dissolving 25.0 g of NaOH in 1.00 L of water. What is the concentration of OH- ions in the solution?
A. 0.250 M
B. 0.500 M
C. 0.750 M
D. 1.00 M
Question 3
A redox reaction involves the oxidation of Fe2+ to Fe3+ and the reduction of MnO4- to Mn2+. If the initial concentration of Fe2+ is 0.1 M and the initial concentration of MnO4- is 0.01 M, what is the ratio of the concentrations of Fe3+ to Mn2+ after the reaction is complete?
A. 1:1
B. 1:10
C. 10:1
D. 100:1
Question 4
A 3.0 g sample of sodium hydroxide is dissolved in water to produce a solution. If the solution has a pH of 13.5, what is the concentration of the solution?
A. 0.1 M
B. 0.2 M
C. 0.3 M
D. 0.4 M
Question 5
A 1.00 L sample of a 0.100 M solution of NaCl(aq) is mixed with a 1.00 L sample of a 0.100 M solution of AgNO3(aq). What is the concentration of the resulting solution?
A. 0.0500 M
B. 0.100 M
C. 0.150 M
D. 0.200 M
Question 6
A polymer P has a molecular weight of 100,000 g/mol. If 10 g of P is dissolved in 100 mL of solvent, what is the concentration of the solution in g/L?
A. 1 g/L
B. 10 g/L
C. 100 g/L
D. 1000 g/L
Question 7
A 2.0 g sample of sulfuric acid is dissolved in water to produce a solution. If the solution has a concentration of 1.5 M, what is the volume of the solution?
A. 1.3 mL
B. 1.5 mL
C. 1.7 mL
D. 1.9 mL
Question 8
A 10 mL solution of 0.1 M NaOH is mixed with 20 mL of 0.05 M HCl. What is the concentration of the resulting solution?
A. 0.05 M
B. 0.1 M
C. 0.15 M
D. 0.2 M
Question 9
A 1.00 L sample of a 0.100 M solution of HCl(aq) is mixed with a 1.00 L sample of a 0.100 M solution of NaOH(aq). What is the pH of the resulting solution?
A. 1.00
B. 2.00
C. 3.00
D. 4.00
Question 10
A metal M has a s\tandard electrode potential of +0.5 V. If a cell is constructed with M as the anode and Zn as the cathode, what is the s\tandard cell potential?
A. +0.5 V
B. +1.0 V
C. +1.5 V
D. +2.0 V
Question 11
A 1.00 L sample of a 0.100 M solution of NaCl(aq) is mixed with a 1.00 L sample of a 0.100 M solution of AgNO3(aq). What is the concentration of the resulting solution?
A. 0.0500 M
B. 0.100 M
C. 0.150 M
D. 0.200 M
Question 12
A 2.0 g sample of sulfur is burned in oxygen to produce sulfur dioxide. If 1.2 g of sulfur dioxide is collected, what is the percentage yield of the reaction?
A. 50%
B. 60%
C. 70%
D. 80%
Question 13
The s\tandard enthalpy of formation of CO2(g) is -393.5 kJ/mol. What is the s\tandard enthalpy of formation of CO(g)?
A. -110.5 kJ/mol
B. -110.5 kJ/mol
C. -110.5 kJ/mol
D. -110.5 kJ/mol
Question 14
A catalyst is added to a reaction mixture containing 1.0 M A and 1.0 M B. If the reaction is first-order with respect to A and second-order with respect to B, and the rate cons\tant is 0.01 s-1, what is the rate of reaction after 10 minutes?
A. 0.01 M/s
B. 0.1 M/s
C. 1.0 M/s
D. 10 M/s
Question 15
A 3.0 g sample of sodium chloride is dissolved in water to produce a solution. If the solution has a density of 1.2 g/mL, what is the volume of the solution?
A. 2.5 mL
B. 3.0 mL
C. 3.5 mL
D. 4.0 mL

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: