Jamb Chemistry 2005 Past Questions and Answers

Question 26:

• JAMB 2005

How many moles of limestone will be required to produce 5.6g of CaO?
[Ca = 40, C = 12, O= 16]

A. 0.20 mol
B. 0.10 mol
C. 1.12 mol
D. 0.56 mol

Question 27:

• JAMB 2005

The shape of the hydrocarbon compound CH₄ is

A. Square planar
B. Planar
C. Linear
D. Tetrahedral

Question 28:

• JAMB 2005

Which of these properties gives a solid its definite shape?

A. Strong intermolecular attraction
B. High melting point
C. High boiling point
D. Weak intermolecular attraction

Question 29:

• JAMB 2005

Sugar is separated from its impurities by

A. Precipitation
B. Crystallization
C. Distillation
D. Evaporation

Question 30:

• JAMB 2005

The component of an atom that contributes least to its mass is the

A. Proton
B. Nucleus
C. Neutron
D. Electron