Jamb Chemistry 2011 Past Questions and Answers

Question 6:

• JAMB 2011

The relative atomic mass of a naturally occurring lithium consisting of 90% \(^7 _3\)Li and \(^6 _3\)10% Li is

A. 6.9
B. 7.1
C. 6.2
D. 6.8

Question 7:

• JAMB 2011

An isotope has an atomic number of 15 and a mass number of 31. The number of protons it contain is

A. 16
B. 15
C. 46
D. 31

Question 8:

• JAMB 2011

The molecular lattice of iodine is held together by

A. Dative bond
B. Metallic bond
C. Hydrogen bond
D. Van der Waal's forces

Question 9:

• JAMB 2011

The arrangement of particles in crystal lattices can be studied using

A. X - rays
B. γ - rays
C. α - rays
D. β - rays

Question 10:

• JAMB 2011

From the diagram above, find the amount of solute deposited when 200 cm\(^3\) of the solution is cooled from 55°C to 40°C.

A. 0.10 mole
B. 0.20mole
C. 0.01 mole
D. 0.02 mole