Waec Chemistry 2001 Past Questions and Answers

Question 6:

• WAEC 2001

Which of the following compounds is covalent?

A. CaCI₂
B. MgO
C. NaN
D. CH₄

Question 7:

• WAEC 2001

A sheet of paper is placed in the path of a beam from a radioactive source. The emissions that pass through the paper consist of

A. Alpha particles and gamma rays
B. Alpha and beta particles
C. Beta particles and gamma rays
D. Alpha particles only

Question 8:

• WAEC 2001

Which of the following features of a human skeleton can be determined by carbon-dating?

A. Height
B. Mass
C. Age
D. Race

Question 9:

• WAEC 2001

Which of the following statements about ideal gases is/are correct? 1. The cohesive forces between their particles are negligible ll. The have no definite volume but occupy the volume of their containers III. They are not compressible IV. Their particles collide with loss of energy

A. L only
B. L and ll only
C. L, ll and lll only
D. L, ll, lll, and IV

Question 10:

• WAEC 2001

P _Total = F₁ + P₂ + P ₃ + .........P_n' where P _Total is the pressure of a mixture of gasses. The equation above is an expression of

A. Graham's law
B. Gay-Lussac's Law
C. Boyle's law
D. Dalton's law