Jamb Chemistry 2009 Past Questions and Answers

Question 6:

• JAMB 2009

A gas exerts pressure on its container because

A. The molecules of a gas collide with the walls of the container
B. Some of the molecules are moving faster than others
C. Of the collisions of the molecules with each other
D. Of the mass of the molecules of the gas

Question 7:

• JAMB 2009

The basic assumption in the kinetic theory of gases that the collisions of the gaseous molecules are perfectly elastic implies that the

A. Forces of attraction and repulsion are in equilibrium
B. Gaseous molecules can occupy any available space
C. Gaseous molecules will continue their motion indefinitely
D. Gases can be compressed

Question 8:

• JAMB 2009

If an atom is represented as \( _{11}^{23}X \), which of the following deduction is correct?

A. It contains 12 protonic
B. It forms a covalent chloride
C. Its atomic number is 23
D. It is an alkali metal

Question 9:

• JAMB 2009

Cathode rays causes an object placed behind a perforated anode to cast a shadow on the screen. This observation shows that the rays

A. Are positively charged
B. Are negatively charged
C. Have mass
D. Travel in straight lines

Question 10:

• JAMB 2009

Which quantum number divides shells into orbitals?

A. Principal
B. Arzimuthal
C. Magnetic
D. Spin