Jamb Chemistry 2001 Past Questions and Answers

Question 6:

• JAMB 2001

Cancerous growths are cured by exposure to

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

Question 7:

• JAMB 2001

An oxide XO₂ has a vapour density of 32. What is the atomic mass of X?

A. 32
B. 20
C. 14
D. 12

Question 8:

• JAMB 2001

Millikan's contributions to the development of atomic theory is the determination of

A. Charge on electron
B. Positive rays
C. Charge to mass ratio
D. Cathode rays

Question 9:

• JAMB 2001

Four elements W, X, Y and Z have atomic number 2,6,16 and 20 respectively. Which of these elements is a metal?

A. X
B. W
C. Z
D. Y

Question 10:

• JAMB 2001

An elements X with relative atomic mass 16.2 contains two isotopes ¹⁶₈X with relative abundance of 90% and ^m₈X with relative abundance of 10%. The value of m is

A. 16
B. 18
C. 12
D. 14