Jamb Chemistry 2019 Past Questions and Answers

Question 141:

• JAMB 2019

When the end alkyl groups of ethyl ethanoate are interchanged, the compound formed is

A. Propylmethanoate
B. Ethylpropanoate
C. Methyl ethanoate
D. Methyl propanoate

Question 142:

• JAMB 2019

The part of the total energy of a system that accounts for the useful work done in a system is known as

A. Enthalpy change
B. None of the above
C. Gibb's free energy
D. Entropy

Question 143:

• JAMB 2019

The periodic table is an arrangement of elements according to their?

A. Oxidation number
B. Atomic number
C. Mass number
D. Nunber of neutrons

Question 144:

• JAMB 2019

The periodic table is an arrangement of elements according to their?

A. Oxidation number
B. Atomic number
C. Mass number
D. Nunber of neutrons

Question 145:

• JAMB 2019

A solid with higher melting and boiling points is likely to be?

A. Covalent compound
B. A Dative compound
C. An Electrovalent compound
D. A Non-metal