Waec Chemistry Past Questions For Year 2009
Question 1
How many orbitals are associated with the p-sub energy level?
- A. 2
- B. 3
- C. 5
- D. 6
Question 2
Consider the reaction represented by the equation: 23892U + 10 → 139 56Ba + 94 36Kr + 31 0n. The reaction represents a
- A. nuclear fission
- B. nuclear fusion
- C. radioactive decay
- D. spontaneous disintegration
Question 3
If 100 atoms of element X contains 70 atoms of 9X and 30 atoms of 11X, calculate the relative atomic mass of X
- A. 9.6
- B. 10.6
- C. 11.6
- D. 20.0
Question 4
How many protons does 4020Ca contain?
- A. 20
- B. 30
- C. 40
- D. 60
Question 5
Which of the following scientists discovered the neutron?
- A. Ernest Rutherford
- B. J.J Thompson
- C. James Chadwick
- D. R. A. M illikan
