Jamb Chemistry 2021 Past Questions and Answers

Question 1:

• JAMB 2021

The process by which salt and water reacted in a limited way to form an acid or a base is?

A. Neutral process
B. Basic acidic process
C. Hydrolysis
D. Sublimation

Question 2:

• JAMB 2021

The fourteen elements (atomic number 90-103) after actinium are called?

A. Actinoids
B. Nucleotides
C. Pre-actinum elements
D. Atomic elements

Question 3:

• JAMB 2021

The molar enthalpy change accompanying the removal of an electron from a gas phase atom or ion in its ground state is called?

A. Electron gain enthalpy
B. Ionization enthalpy
C. Enthalpy change
D. Enthalpic gas removal

Question 4:

• JAMB 2021

In troposphere, the two types of pollutants are?

A. Gaseous and particulate pollutants
B. Carbon and metallic pollutants
C. Natural and man-made pollutants
D. Sulphuric and nitrogenous pollutants

Question 5:

• JAMB 2021

One of the following is not a physical property of monosaccharides?

A. Monosaccharides get charred when heated
B. Monosaccharides are water-soluble, sweet substances
C. They are highly vital to the exploration of metals
D. They can be reduced to sugar alcohols