Jamb Chemistry 2023 Past Questions and Answers

Question 56:

• JAMB 2023

What is the trend for ionization energy across a period in the periodic table?

A. Increases from left to right.
B. Remains constant
C. Varies randomly
D. Decreases from left to right

Question 57:

• JAMB 2023

Which type of chemical combination involves the transfer of electrons from one atom to another, resulting in the formation of oppositely charged ions?

A. Ionic bonding
B. Hydrogen bonding
C. Covalent bonding
D. Metallic bonding

Question 58:

• JAMB 2023

Which of the following alkanes has a straight-chain structure?

A. Cyclopentane (C5H10)
B. Isobutane (C4H10)
C. 2 - methyl propane (C4H10)
D. Pentane (C5H12)

Question 59:

• JAMB 2023

What is the product of the electrolysis of aqueous sodium chloride (NaCl) using inert electrodes?

A. Hydrogen gas at the cathode and chlorine gas at the anode
B. Hydrogen gas at the cathode and oxygen gas at the anode
C. Sodium metal at the cathode and chlorine gas at the anode
D. Sodium metal at the cathode and oxygen gas at the anode

Question 60:

• JAMB 2023

When an acidic solution is diluted, what happens to its pH?

A. It depends on the specific acid
B. It decreases
C. It remains the same
D. It increases