Jamb Chemistry 2000 Past Questions and Answers

Question 6:

• JAMB 2000

How many moles HCL will be required to react with potassium heptaoxodichromate (VI) to produce 3 moles of chlorine?

A. 14
B. 12
C. 11
D. 10

Question 7:

• JAMB 2000

The ratio of the initial to final pressure of a given mass of gas is 1:1.5. Calculate the final volume of the gas if the initial volume was 300 cm³ at the same temperature

A. 120 cm³
B. 200 cm³
C. 450 cm³
D. 750 cm³

Question 8:

• JAMB 2000

The partial pressure of oxygen in a sample of air is 452 mm Hg and the total pressure is 780 mm Hg. What is the mole fraction of oxygen?

A. 0.203
B. 0.579
C. 2.030
D. 5.790

Question 9:

• JAMB 2000

The fundamental difference between the three states of matter is the

A. Shape of their particles
B. Number of particles in each state
C. Shape of the container they occupy
D. Degree of movement of their particles

Question 10:

• JAMB 2000

Which of the following statement is correct about the periodic table?

A. Elements in the same period have the same number of valency electron
B. The valence electron of the elements in the same period increase progressively across the period
C. Elements in the same group have the same number of electron shells
D. The non-metallic properties of the elements tend to decrease across each period